Datasheet

ManualsBrandsDiodes Incorporated ManualsIntegrated Circuits (ICs)LDO Voltage Regulator 3.3V 360mA SOT-23

300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR AP2125

Data Sheet

BCD Semiconductor Manufacturing LimitedSep. 2012 Rev. 1. 5

General Description

The AP2125 series are 300mA, positive voltage regu-

lator ICs fabricated by CMOS process.

Each of these ICs is equipped with a voltage reference,

an error amplifier, a resistor network for setting output

voltage, a chip enable circuit, a current limit circuit and

OTSD (over temperature shut down) circuit to prevent

the IC from over current and over temperature.

The AP2125 series have features of high ripple rejec-

tion, low dropout voltage, low noise, high output volt-

age accuracy and low current consumption which

make them ideal for use in various battery-powered

apparatus.

The AP2125 have 1.8V, 2.5V, 2.8V, 3.0V, 3.3V, 4.15V

and 4.2V fixed voltage versions.

These ICs are available in tiny SC-70-5 and SC-82

packages as well as industry standard SOT-23-3 and

SOT-23-5 packages.

Features

· Excellent Ripple Rejection: 70dB Typical (1.8V

Version)

· Low Dropout Voltage: 65mV (I

OUT

=100mA,

3.3V Version)

· Low Standby Current: 0.01µA Typical

· Low Quiescent Current: 60µA Typical

· Extremely Low Noise: 50µVrms Typical

· Maximum Output Current: 300mA (Min.)

· High Output Voltage Accuracy:

±2%

· Compatible with Low ESR Ceramic Capacitor

· Excellent Line/Load Regulation

Applications

· CDMA/GSM Cellular Handsets

· Battery-powered Equipments

· Laptops, Palmtops, Notebook Computers

· Hand-held Instruments

· PCMCIA Cards

· Portable Information Appliances

Figure 1. Package Types of AP2125

SOT-23-3 SOT-23-5 SC-70-5

SC-82

Summary of content (27 pages)

PAGE 1
Data Sheet 300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR General Description Features The AP2125 series are 300mA, positive voltage regulator ICs fabricated by CMOS process. · · Each of these ICs is equipped with a voltage reference, an error amplifier, a resistor network for setting output voltage, a chip enable circuit, a current limit circuit and OTSD (over temperature shut down) circuit to prevent the IC from over current and over temperature.
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Data Sheet 300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR AP2125 Pin Configuration N Package (SOT-23-3) K/KS Package (SOT-23-5/SC-70-5) KC Package (SC-82) VIN 3 1 2 GND VOUT VIN 1 GND 2 CE 3 5 VOUT 4 NC CE 1 4 VIN GND 2 3 VOUT Figure 2. Pin Configuration of AP2125 (Top View) Pin Description Pin Number Pin Name Function SOT-23-3 SOT-23-5/ SC-70-5 SC-82 3 1 4 VIN Input voltage 1 2 2 GND Ground 3 1 CE Active high enable input pin.
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Data Sheet 300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR AP2125 Functional Block Diagram Shutdown and Logic Control 3 CE VIN 3 (1) Shutdown and Logic Control 1 (4) VIN VREF VREF MOS Driver MOS Driver 2 5 (3) VOUT Current Limit and Thermal Protection Current Limit and Thermal Protection 1 2 (2) GND VOUT GND A(B) A SOT-23-5/SC-70-5 SOT-23-3 B SC-82 Figure 3. Functional Block Diagram of AP2125 Sep. 2012 Rev. 1.
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Data Sheet 300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR AP2125 Ordering Information AP2125 E1: Lead Free G1: Green Circuit Type TR: Tape and Reel Package 1.8: Fixed Output 1.8V 2.5: Fixed Output 2.5V 2.8: Fixed Output 2.8V 3.0: Fixed Output 3.0V 3.3: Fixed Output 3.3V 4.15: Fixed Output 4.15V 4.2: Fixed Output 4.2V N: SOT-23-3 K: SOT-23-5 KS: SC-70-5 KC: SC-82 Package SOT-23-3 SOT-23-5 Temperature Range -40 to 85oC oC -40 to 85 Part Number Marking ID Lead Free Green AP2125N-1.
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Data Sheet 300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR AP2125 Absolute Maximum Ratings (Note 1) Parameter Symbol Value Unit Input Voltage VIN 6.5 V Enable Input Voltage VCE -0.3 to VIN+0.
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Data Sheet 300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR AP2125 Electrical Characteristics AP2125-1.8 Electrical Characteristics (VIN=2.8V, TA=25oC, CIN=1μF, COUT=1μF, Bold typeface applies over -40oC≤TJ≤85oC, unless otherwise specified.) Parameter Output Voltage Input Voltage Maximum Output Current Symbol VOUT Conditions VIN=2.8V 1mA≤IOUT≤30mA Min Typ Max Unit 1.764 1.8 1.836 V 6 V VIN IOUT(MAX) VIN-VOUT=1V, VOUT=1.76V 300 360 mA Load Regulation VRLOAD VIN=2.
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Data Sheet 300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR AP2125 Electrical Characteristics (Continued) AP2125-2.5 Electrical Characteristics (VIN=3.5V, TA=25oC, CIN=1μF, COUT=1μF, Bold typeface applies over -40oC≤TJ≤85oC, unless otherwise specified.) Parameter Output Voltage Input Voltage Maximum Output Current Symbol VOUT Conditions VIN=3.5V 1mA≤IOUT≤30mA Min Typ Max Unit 2.45 2.5 2.55 V 6 V VIN IOUT(MAX) VIN-VOUT=1V, VOUT=2.45V 300 360 mA Load Regulation VRLOAD VIN=3.
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Data Sheet 300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR AP2125 Electrical Characteristics (Continued) AP2125-2.8 Electrical Characteristics (VIN=3.8V, TA=25oC, CIN=1μF, COUT=1μF, Bold typeface applies over -40oC≤TJ≤85oC, unless otherwise specified.) Parameter Output Voltage Input Voltage Maximum Output Current Symbol VOUT Conditions VIN=3.8V 1mA≤IOUT≤30mA Min Typ Max Unit 2.744 2.8 2.856 V 6 V VIN IOUT(MAX) VIN-VOUT=1V, VOUT=2.74V 300 360 mA Load Regulation VRLOAD VIN=3.
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Data Sheet 300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR AP2125 Electrical Characteristics (Continued) AP2125-3.0 Electrical Characteristics (VIN=4.0V, TA=25oC, CIN=1μF, COUT=1μF, Bold typeface applies over -40oC≤TJ≤85oC, unless otherwise specified.) Parameter Output Voltage Input Voltage Maximum Output Current Symbol VOUT Conditions VIN=4.0V 1mA≤IOUT≤30mA Min Typ Max Unit 2.94 3.0 3.06 V 6 V VIN IOUT(MAX) VIN-VOUT=1V, VOUT=2.94V 300 360 mA Load Regulation VRLOAD VIN=4.
PAGE 10
Data Sheet 300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR AP2125 Electrical Characteristics (Continued) AP2125-3.3 Electrical Characteristics (VIN=4.3V, TA=25oC, CIN=1μF, COUT=1μF, Bold typeface applies over -40oC≤TJ≤85oC, unless otherwise specified.) Parameter Output Voltage Input Voltage Maximum Output Current Symbol VOUT Conditions VIN=4.3V 1mA≤IOUT≤30mA Min Typ Max Unit 3.234 3.3 3.366 V 6 V VIN IOUT(MAX) VIN-VOUT=1V, VOUT=3.23V 300 360 mA Load Regulation VRLOAD VIN=4.
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Data Sheet 300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR AP2125 Electrical Characteristics (Continued) AP2125-4.15 Electrical Characteristics (VIN=5.15V, TA=25oC, CIN=1μF, COUT=1μF, Bold typeface applies over -40oC≤TJ≤85oC, unless otherwise specified.) Parameter Output Voltage Input Voltage Maximum Output Current Symbol VOUT Conditions VIN=5.15V 1mA≤IOUT≤30mA Min Typ Max Unit 4.067 4.15 4.233 V 6 V VIN IOUT(MAX) VIN-VOUT=1V, VOUT=4.
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Data Sheet 300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR AP2125 Electrical Characteristics (Continued) AP2125-4.2 Electrical Characteristics (VIN=5.2V, TA=25oC, CIN=1μF, COUT=1μF, Bold typeface applies over -40oC≤TJ≤85oC, unless otherwise specified.) Parameter Output Voltage Input Voltage Maximum Output Current Symbol VOUT Conditions VIN=5.2V 1mA≤IOUT≤30mA Min Typ Max Unit 4.116 4.2 4.284 V 6 V VIN IOUT(MAX) VIN-VOUT=1V, VOUT=4.12V 300 360 mA Load Regulation VRLOAD VIN=5.
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Data Sheet 300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR AP2125 Typical Performance Characteristics 3.50 1.90 AP2125-1.8 VIN=2.8V 1.88 3.46 o TC=25 C 1.84 Output Voltage (V) Output Voltage (V) 1.86 1.82 1.80 1.78 1.76 3.42 3.40 3.38 3.36 3.34 1.72 3.32 3.30 0 50 100 150 200 250 o TC=25 C 3.44 1.74 1.70 AP2125-3.3 VIN=4.3V 3.48 300 0 50 100 250 300 Figure 5. Output Voltage vs. Output Current Figure 4. Output Voltage vs.
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Data Sheet 300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR AP2125 Typical Performance Characteristics (Continued) 400 360 IOUT=10mA 320 IOUT=100mA AP2125-1.8 VIN=2.8V IOUT=200mA 280 Dropout Voltage (mV) Dropout Voltage (mV) 400 IOUT=300mA 240 200 160 120 360 IOUT=10mA 320 IOUT=100mA IOUT=200mA 280 IOUT=300mA 240 200 160 120 80 80 40 40 0 0 -25 0 25 50 -25 75 0 25 50 75 o o Case Temperature ( C) Case Temperature ( C) Figure 8. Dropout Voltage vs.
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Data Sheet 300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR AP2125 Typical Performance Characteristics (Continued) 2.0 3.6 1.8 3.2 1.4 o TC=-40 C 1.2 o TC=25 C 1.0 o TC=85 C 0.8 AP2125-3.3 VIN=4.3V 2.8 AP2125-1.8 VIN=2.8V Output Voltage (V) Output Voltage (V) 1.6 2.4 TC=-40 C 2.0 TC=25 C 1.6 TC=85 C o o o 1.2 0.6 0.8 0.4 0.4 0.2 0.0 0.0 0 50 100 150 200 250 300 350 400 450 500 0 50 100 150 Output Current (mA) 2.0 3.6 1.8 3.
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Data Sheet 300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR AP2125 Typical Performance Characteristics (Continued) 2.0 3.6 1.8 3.2 2.8 o 1.4 TC=-40 C 1.2 TC=25 C 1.0 TC=85 C Output Voltage (V) Output Voltage (V) 1.6 o o 0.8 0.6 0.4 0.2 0.0 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 o TC=-40 C o 2.4 TC=25 C 2.0 TC=85 C o 1.6 1.2 AP2125-1.8 o TC=25 C 0.8 AP2125-3.3 o TC=25 C No Load 0.4 No Load 4.5 5.0 5.5 0.0 0.0 6.0 0.5 1.0 1.5 2.0 Input Voltage (V) 4.0 4.
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Data Sheet 300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR AP2125 Typical Performance Characteristics (Continued) 100 100 90 80 70 60 50 40 TC=-40oC 30 TC=25 C o o TC=85 C 20 70 60 50 o TC=-40 C 40 o TC=25 C 30 TC=85oC 20 10 10 0 AP2125-3.3 No Load 80 Supply Current (μA) Supply Current (μA) 90 AP2125-1.8 No Load 0 0 1 2 3 4 5 6 0 1 2 Input Voltage (V) Figure 20. Supply Current vs. Input Voltage 5 6 80 76 76 AP2125-1.8 VIN=2.
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Data Sheet 300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR AP2125 Typical Performance Characteristics (Continued) 130 150 120 140 130 110 120 110 90 Supply Current (μA) Supply Current (μA) 100 80 70 o 60 TC=-40 C 50 TC=25 C 40 TC=85 C o o 30 AP2125-1.8 VIN=2.8V 20 90 80 70 o 60 TC=-40 C 50 TC=25 C 40 TC=85 C o o 30 AP2125-3.3 VIN=4.
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Data Sheet 300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR AP2125 Typical Performance Characteristics (Continued) VIN (1V/Div) VIN (0.5V/Div) AP2125-1.8 4.8 3.8 2.8 AP2125-3.3 5 4.5 4 ΔVOUT (0.05V/Div) ΔVOUT (0.02V/Div) 0.02 0 -0.02 0.05 0 -0.05 Time (100μs/Div) Time (40μs/Div) Figure 29. Line Transient (Conditions: IOUT=30mA, COUT=1μF, VIN=4 to 5V) Figure 28. Line Transient (Conditions: IOUT=30mA, COUT=1μF, VIN=2.8 to 3.8V) VOUT (0.02V/Div) VOUT (0.02V/Div) AP2125-1.8 1.84 1.
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Data Sheet 300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR AP2125 Typical Performance Characteristics (Continued) 1000 AP2125-1.8 CIN = 1μF AP2125-2.8 VCE (1V/Div) 3 COUT = 1μF 100 2 ESR (Ω) 1 0 10 Stable Area vOUT (1V/Div) 3 1 2 1 0.1 0 0 50 100 Time (200μs/Div) 250 300 100 100 AP2125-1.8 VIN=2.8V 90 80 IOUT=30mA 90 AP2125-3.3 VIN=4.3V 80 IOUT=30mA 70 PSRR (dB) 70 PSRR (dB) 200 Figure 33. ESR vs. Output Current Figure 32.
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Data Sheet 300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR AP2125 Typical Performance Characteristics (Continued) 800 600 550 AP2125-1.8 Package: SC-70-5 No Heatsink 450 AP2125-3.3 Package: SC-70-5 No Heatsink 700 Power Dissipation (mW) Power Dissipation (mW) 500 400 350 300 250 200 600 500 400 300 200 150 100 100 50 0 0 30 40 50 60 70 80 90 100 110 120 30 40 50 60 70 80 90 100 110 120 o o Ambient Temperature ( C) Ambient Temperature ( C) Figure 37.
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Data Sheet 300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR AP2125 Typical Application AP2125-1.8 VIN=2.8V VIN VIN VOUT=1.8V VOUT GND VOUT COUT 1μF CIN 1μF VIN AP2125-3.0 VIN=4V VIN VOUT=3V VOUT VOUT GND COUT NC CE 1μF CIN 1μF Figure 38. Typical Application of AP2125 Sep. 2012 Rev. 1.
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Data Sheet 300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR AP2125 Mechanical Dimensions SOT-23-3 Unit: mm(inch) 2.820(0.111) 3.020(0.119) 1.800(0.071) 2.000(0.079) 0.200(0.008) 0 8 0.300(0.012) 0.500(0.020) 1.450(0.057) MAX. 0.950(0.037) TYP 0.300(0.012) 0.600(0.024) 2.650(0.104) 2.950(0.116) 1.500(0.059) 1.700(0.067) 0.100(0.004) 0.200(0.008) ° ° 0.000(0.000) 0.150(0.006) 0.900(0.035) 1.300(0.051) Sep. 2012 Rev. 1.
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Data Sheet 300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR AP2125 Mechanical Dimensions (Continued) SOT-23-5 Unit: mm(inch) 0.300(0.012) 0.600(0.024) 1.500(0.059) 1.700(0.067) 0.100(0.004) 0.200(0.008) 2.950(0.116) 2.650(0.104) 2.820(0.111) 3.020(0.119) 0.200(0.008) 0.700(0.028) REF 0.300(0.012) 0.400(0.016) 0° 8° 1.800(0.071) 2.000(0.079) 0.000(0.000) MAX 1.450(0.057) 0.950(0.037) TYP 0.150(0.006) 0.900(0.035) 1.300(0.051) Sep. 2012 Rev. 1.
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Data Sheet 300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR AP2125 Mechanical Dimensions (Continued) SC-70-5 Unit: mm(inch) 0° 2.000(0.079) 8° 2.200(0.087) 0.150(0.006) 0.350(0.014) 0.200(0.008) 1.150(0.045) 1.350(0.053) 2.150(0.085) 2.450(0.096) 0.260(0.010) 0.460(0.018) 0.525(0.021)REF 0.650(0.026)TYP 0.000(0.000) 0.100(0.004) 1.200(0.047) 1.400(0.055) 0.080(0.003) 0.150(0.006) 0.900(0.035) 0.900(0.035) 1.000(0.039) 1.100(0.043) Sep. 2012 Rev. 1.
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Data Sheet 300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR AP2125 Mechanical Dimensions (Continued) SC-82 Unit: mm(inch) 0.250(0.010) 0.400(0.016) 4° 12° 0.150(0.006) Typ 1.150(0.045) 1.350(0.053) 4° 12 ° 0.100(0.004) 0.260(0.010) 1.800(0.071) 2.400(0.094) 0° 8° 0.260(0.010) 0.460(0.018) 0.350(0.014) 0.500(0.020) 1.800(0.071) 2.200(0.087) 1.300(0.051) Typ 0.700(0.027) 1.000(0.039) 0.800(0.031) 1.100(0.043) 4° 12° 0.000(0.000) 0.100(0.004) Sep. 2012 Rev. 1.
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BCD Semiconductor Manufacturing Limited http://www.bcdsemi.com IMPORTANT NOTICE IMPORTANT NOTICE BCD Semiconductor BCD Semiconductor Manufacturing Manufacturing Limited Limited reserves reserves the the right right to to make make changes changes without without further further notice notice to to any any products products or or specifispecifications herein. cations herein.