User guide

ManualsBrandsDiodes ManualsHardwareAP2805

Data Sheet

500mA High-side Power Distribution Switch with Enable and Flag AP2805

Aug. 2012 Rev 1. 0 BCD Semiconductor Manufacturing Limited

General Description

The AP2805 is an integrated high-side power switch

that consists of N-Channel MOSFET, charge pump,

over current & temperature and other related protection

circuits. The switch’s low RDS (ON), 60mΩ, design

easily to meet USB voltage drop requirements. It

includes soft-start to limit inrush current, over-current

protection, load short protection with fold-back, and

thermal shutdown to avoid switch failure during hot

plug-in. Under voltage lockout (UVLO) function is

used to ensure the device remain off unless there is a

valid input voltage present. A Flag output is available

to indicate fault conditions to the local USB

controller.

The AP2805 is available in standard packages of

SOIC-8 and MSOP-8.

Features

•

Low MOSFET on Resistance:

60mΩ@V

=5.0V

• Compliant to USB Specifications

•

Operating Voltage Range: 2.7V to 5.5V

•

Low Supply Current: 60µA (Typ.)

•

Low Shutdown Current: 1.0µA (Max)

•

Guarantee 0.5A Continuous Load

•

Current Limit: 0.7A (Min), 1.4A (Max)

•

Under-voltage Lockout

•

Logic Level Enable Pin: Available in

Active-high or Active-low Version

•

Over-current Protection

• Over Temperature Protection

• Load Short Protection with Fold-back

• No Reverse Current When Power Off

• Deglitched Flag Output with Open Drain

• With Output Shutdown Pull-low Resistor for

A/C Versions

• UL Approved (File No. E339337)

• Nemko CB Scheme IEC60950-1, Ref. Certif

No. NO67288

Applications

• USB Power Management

•

USB Bus/Self Powered Hubs

• Hot-plug Power Supplies

• Battery-charger Circuits

• Notebooks, Motherboard PCs

Figure 1. Package Types of AP2805

SOIC-8 MSOP-8

Summary of content (16 pages)

PAGE 1
Data Sheet 500mA High-side Power Distribution Switch with Enable and Flag General Description Features The AP2805 is an integrated high-side power switch that consists of N-Channel MOSFET, charge pump, over current & temperature and other related protection circuits. The switch’s low RDS (ON), 60mΩ, design easily to meet USB voltage drop requirements.
PAGE 2
Data Sheet 500mA High-side Power Distribution Switch with Enable and Flag AP2805 Pin Configuration M/MM Package （SOIC-8/MSOP-8） Figure 2. Pin Configuration of AP2805 (Top View) Pin Descriptions Pin Number Pin Name 1 GND Ground 2, 3 VIN Supply input pin 4 Chip enable control input, active low or high 5 Fault flag pin, output with open drain, need a pull-up resistor in application, active low to indicate OCP or OTP 6, 7, 8 Aug. 2012 Function VOUT Switch output voltage Rev 1.
PAGE 3
Data Sheet 500mA High-side Power Distribution Switch with Enable and Flag AP2805 Functional Block Diagram Figure 3. Functional Block Diagram of AP2805 Aug. 2012 Rev 1.
PAGE 4
Data Sheet 500mA High-side Power Distribution Switch with Enable and Flag AP2805 Ordering Information AP2805 G1: Green Circuit Type TR: Tape & Reel Blank: Tube Condition A: Active High with Auto Discharge B: Active High without Auto Discharge C: Active Low with Auto Discharge D: Active Low without Auto Discharge Product Package SOIC-8 AP2805A MSOP-8 Condition Active High with Auto Discharge Package M: SOIC-8 MM: MSOP-8 Temperature Part Number Range Green -40 to 85°C SOIC-8 Active High AP2805B w
PAGE 5
Data Sheet 500mA High-side Power Distribution Switch with Enable and Flag AP2805 Absolute Maximum Ratings (Note 1) Parameter Symbol Value Unit VIN 6.
PAGE 6
Data Sheet 500mA High-side Power Distribution Switch with Enable and Flag AP2805 Electrical Characteristics (VIN=5.0V, CIN=2.2µF, COUT=1.0µF, Typical TA=25°C, unless otherwise specified) Parameter Symbol Input Voltage Range VIN Switch On Resistance RDS(ON) Conditions Min Typ Max Unit 2.7 5.5 V 60 80 mΩ 1.0 1.4 A 80 µA VIN=5.0V, IOUT=0.5A Current Limit ILIMIT VOUT=4.0V Supply Current ISUPPLY VIN=5.0V, No Load 60 Fold-back Short Current ISHORT VOUT=0V 0.
PAGE 7
Data Sheet 500mA High-side Power Distribution Switch with Enable and Flag AP2805 Typical Performance Characteristics 100 100 80 80 Supply Current (μA) Supply Current (μA) 90 VIN=5V Enable Active No Load 90 70 60 50 40 30 70 60 50 40 o TA=-40 C 30 o TA= 25 C o TA= 85 C Enable Active 20 20 10 10 0 0 -40 -20 0 20 40 60 -10 1.0 80 1.5 2.0 2.5 o Figure 4. Supply Current vs. Ambient Temperature 4.5 5.0 5.5 Current Limit (A) 1.3 1.2 1.1 1.0 0.9 1.2 1.1 1.0 0.9 0.8 0.
PAGE 8
Data Sheet 500mA High-side Power Distribution Switch with Enable and Flag AP2805 Typical Performance Characteristics (Continued) 0.80 1.0 o TA=25 C Enable Active 0.70 0.65 0.60 0.55 0.50 0.45 0.40 VIN=5V Enable Active 0.9 Output Short Current (A) Output Short Current (A) 0.75 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 3.0 3.5 4.0 4.5 5.0 0.0 -40 5.5 -20 Input Voltage (V) vs. 60 80 vs. 1.0 0.8 0.4 0.2 0.0 -0.2 -0.4 0.6 0.4 0.2 0.0 -0.2 -0.4 -0.6 -0.6 -0.8 -0.8 -20 0 20 40 60 VIN=3.
PAGE 9
Data Sheet 500mA High-side Power Distribution Switch with Enable and Flag AP2805 Typical Performance Characteristics (Continued) 100 100 80 TA=25 C IOUT=0.5A Enable Active 90 Switch On Resistance (mΩ) Switch On Resistance (mΩ) O IOUT=0.5A VIN=5V Enable Active 90 70 60 50 40 30 20 80 70 60 50 40 10 30 0 -40.0 -20.0 0.0 20.0 40.0 60.0 O 3.0 80.0 3.5 4.0 Ambient Temperature ( C) 2.70 Enable Active 2.60 2.55 VIN Rising 2.50 2.45 2.40 VIN Falling 2.35 2.30 2.25 -20.0 0.0 20.
PAGE 10
Data Sheet 500mA High-side Power Distribution Switch with Enable and Flag AP2805 Typical Performance Characteristics (Continued) 14 VIN=5V 1.5 Enable Threshold Voltage (V) Flag Delay Time During Over Current (mS) 1.6 O TA=25 C VIN=5V Enable Active 12 10 8 1.4 VENH 1.3 1.2 VENL 1.1 6 1.0 3.0 3.5 4.0 4.5 5.0 5.5 -40.0 -20.0 0.0 20.0 40.0 60.0 80.0 O Supply Voltage (V) Ambient Temperature ( C) Figure 16. Flag Delay Time During Over Current vs. Supply Voltage Figure 17.
PAGE 11
Data Sheet 500mA High-side Power Distribution Switch with Enable and Flag AP2805 Typical Performance Characteristics (Continued) VEN (5V/div) VEN (5V/div) IINRUSH (500mA/ div) IINRUSH (1A/div) VOUT (1V/div) VOUT (1V/div) Time(500µs/div) Time(500µs/div) Figure 20. Output Turn ON and Rise Time (CIN=1.0μF,COUT=1.0μF,RL=6.6Ω) Figure 21. Output Turn ON and Rise Time (CIN=1.
PAGE 12
Data Sheet 500mA High-side Power Distribution Switch with Enable and Flag AP2805 Typical Performance Characteristics (Continued) VFLAG (1V/div) VEN (5V/div) VOUT (1V/div) IOUT (1A/div) VOUT (1V/div) IOUT (1A/div) Time(100ms/div) Time(5ms/div) Figure 24. Output Short to GND Current (VIN=5V,CIN=1.0μF) Figure 25. FLAG Response During Over Current (VIN=5V,CIN=1.0μF,COUT=470μF) VFLAG (1V/div) VOUT (1V/div) IOUT (1A/div) Time(5ms/div) Figure 26. FLAG Response During Over Temperature (VIN=5V,CIN=1.
PAGE 13
Data Sheet 500mA High-side Power Distribution Switch with Enable and Flag AP2805 Typical Application Note 2: 2.2µF input capacitor is enough in most application cases. If the VOUT is short to ground frequently during usage, large size input capacitor is necessary, recommend 22µF. Figure 27. Typical Application of AP2805 Aug. 2012 Rev 1.
PAGE 14
Data Sheet 500mA High-side Power Distribution Switch with Enable and Flag AP2805 Mechanical Dimensions SOIC-8 4.700(0.185) 5.100(0.201) 7° Unit: mm(inch) 0.320(0.013) 1.350(0.053) 1.750(0.069) 8° 8° 7° 0.675(0.027) 0.725(0.029) D 5.800(0.228) 1.270(0.050) 6.200(0.244) TYP D 20:1 0.300(0.012) R0.150(0.006) 0.100(0.004) 0.800(0.031) 0.200(0.008) 0° 8° 1.000(0.039) 3.800(0.150) 4.000(0.157) 0.330(0.013) 0.510(0.020) 0.190(0.007) 0.250(0.010) 0.900(0.035) 1° 5° R0.150(0.006) 0.450(0.
PAGE 15
Data Sheet 500mA High-side Power Distribution Switch with Enable and Flag AP2805 Mechanical Dimensions (Continued) 2.900(0.114) 3.100(0.122) 0.200(0.008) 0.000(0.000) 4.700(0.185) 5.100(0.201) Aug. 2012 Unit: mm(inch) 0.410(0.016) 0.650(0.026) MSOP-8 Rev 1.
PAGE 16
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.