Datasheet

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FEATURES

DESCRIPTION

APPLICATIONS

GND

4.7 µF

10 µH

10 µF

TPS62202

2.5 V − 6 V

1.8 V / 300 mA

100

0.010 0.100 1

10 100 1000

Efficiency − %

EFFICIENCY

LOAD CURRENT

−Load Current − mA

= 1.8 V

= 2.7 V

= 3.7 V

= 5 V

TPS62200 , , TPS62201

TPS62202 , TPS62203 , TPS62207

TPS62204 , TPS62205 , TPS62208

SLVS417E – MARCH 2002 – REVISED MAY 2006

HIGH-EFFICIENCY, SOT23

STEP-DOWN, DC-DC CONVERTER

• High Efficiency Synchronous Step-Down

The TPS6220x devices are a family of high-efficiency

Converter With up to 95% Efficiency

synchronous step-down converters ideally suited for

• 2.5-V to 6-V Input Voltage Range

portable systems powered by 1-cell Li-Ion or 3-cell

• Adjustable Output Voltage Range From 0.7 V

NiMH/NiCd batteries. The devices are also suitable

to V

to operate from a standard 3.3-V or 5-V voltage rail.

• Fixed Output Voltage Options Available

With an output voltage range of 6 V down to 0.7 V

• Up to 300 mA Output Current

and up to 300 mA output current, the devices are

ideal to power low voltage DSPs and processors

• 1-MHz Fixed Frequency PWM Operation

used in PDAs, pocket PCs, and smart phones.

• Highest Efficiency Over Wide Load Current

Under nominal load current, the devices operate with

Range Due to Power Save Mode

a fixed switching frequency of typically 1 MHz. At

• 15-µA Typical Quiescent Current

light load currents, the part enters the power save

mode operation; the switching frequency is reduced

• Soft Start

and the quiescent current is typically only 15 µA;

• 100% Duty Cycle Low-Dropout Operation

therefore, it achieves the highest efficiency over the

• Dynamic Output-Voltage Positioning

entire load current range. The TPS6220x needs only

three small external components. Together with the

• Available in a 5-Pin SOT23 Package

SOT23 package, a minimum system solution size is

achieved. An advanced fast response voltage mode

control scheme achieves superior line and load

• PDAs and Pocket PC

regulation with small ceramic input and output

• Cellular Phones, Smart Phones

capacitors.

• Low Power DSP Supply

• Digital Cameras

• Portable Media Players

• Portable Equipment

Figure 1. Typical Application

(Fixed Output Voltage Version)

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas

Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

Summary of content (24 pages)

PAGE 1
TPS62200,, TPS62201 TPS62202, TPS62203, TPS62207 TPS62204, TPS62205, TPS62208 www.ti.com SLVS417E – MARCH 2002 – REVISED MAY 2006 HIGH-EFFICIENCY, SOT23 STEP-DOWN, DC-DC CONVERTER FEATURES • • • • • • • • • • • High Efficiency Synchronous Step-Down Converter With up to 95% Efficiency 2.5-V to 6-V Input Voltage Range Adjustable Output Voltage Range From 0.
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TPS62200,, TPS62201 TPS62202, TPS62203, TPS62207 TPS62204, TPS62205, TPS62208 www.ti.com SLVS417E – MARCH 2002 – REVISED MAY 2006 This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage. ESD damage can range from subtle performance degradation to complete device failure.
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TPS62200,, TPS62201 TPS62202, TPS62203, TPS62207 TPS62204, TPS62205, TPS62208 www.ti.
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TPS62200,, TPS62201 TPS62202, TPS62203, TPS62207 TPS62204, TPS62205, TPS62208 www.ti.com SLVS417E – MARCH 2002 – REVISED MAY 2006 DETAILED DESCRIPTION (continued) The GM amplifier and input voltage determines the rise time of the Sawtooth generator; therefore any change in input voltage or output voltage directly controls the duty cycle of the converter. This gives a very good line and load transient regulation.
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TPS62200,, TPS62201 TPS62202, TPS62203, TPS62207 TPS62204, TPS62205, TPS62208 www.ti.com SLVS417E – MARCH 2002 – REVISED MAY 2006 DETAILED DESCRIPTION (continued) DYNAMIC VOLTAGE POSITIONING As described in the power save mode operation sections and as detailed in Figure 2, the output voltage is typically 0.8% above the nominal output voltage at light load currents, as the device is in power save mode.
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TPS62200,, TPS62201 TPS62202, TPS62203, TPS62207 TPS62204, TPS62205, TPS62208 www.ti.com SLVS417E – MARCH 2002 – REVISED MAY 2006 ABSOLUTE MAXIMUM RATINGS over operating free-air temperature (unless otherwise noted) (1) UNIT Supply voltages, VI (2) -0.3 V to 7.0 V Voltages on pins SW, EN, FB (2) -0.3 V to VCC +0.
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TPS62200,, TPS62201 TPS62202, TPS62203, TPS62207 TPS62204, TPS62205, TPS62208 www.ti.com SLVS417E – MARCH 2002 – REVISED MAY 2006 ELECTRICAL CHARACTERISTICS (continued) VI = 3.6 V, VO = 1.8 V, IO = 200 mA, EN = VIN, TA = -40°C to 85°C, typical values are at TA = 25°C (unless otherwise noted) PARAMETER TEST CONDITIONS Ilkg_(N) N-channel leakage current VDS = 6.0 V I(LIM) P-channel current limit 2.5 V < Vin < 6.0 V MIN TYP MAX UNIT 0.
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TPS62200,, TPS62201 TPS62202, TPS62203, TPS62207 TPS62204, TPS62205, TPS62208 www.ti.
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TPS62200,, TPS62201 TPS62202, TPS62203, TPS62207 TPS62204, TPS62205, TPS62208 www.ti.com SLVS417E – MARCH 2002 – REVISED MAY 2006 EFFICIENCY vs LOAD CURRENT 100 EFFICIENCY vs INPUT VOLTAGE 100 VO = 1.5 V VO = 1.8 V 95 90 95 VI = 2.7 V IL = 150 mA 85 75 Efficiency − % Efficency − % 80 VI = 3.7V 70 65 60 IL = 300 mA IL = 1 mA 85 80 VI = 5 V 55 90 50 75 45 40 0.010 0.100 1 10 100 IL − Load Current − mA 70 2.50 1000 3 3.50 4 4.50 5 VI − Input Voltage − V Figure 5. Figure 6.
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TPS62200,, TPS62201 TPS62202, TPS62203, TPS62207 TPS62204, TPS62205, TPS62208 www.ti.com SLVS417E – MARCH 2002 – REVISED MAY 2006 OUTPUT VOLTAGE vs OUTPUT CURRENT rds(on) P-CHANNEL SWITCH vs INPUT VOLTAGE 0.8 1.90 1.88 0.7 r ds(on) − P-Channel Switch − Ω VO − Outrput Voltage − V 1.86 1.84 PFM Mode 1.82 1.80 PWM Mode 1.78 1.76 1.74 TA = 85°C 0.6 TA = 25°C 0.5 TA = −40°C 0.4 0.3 1.72 1.70 0 50 100 150 200 IO − Output Current − mA 250 300 0.2 2.5 3 3.5 4 4.
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TPS62200,, TPS62201 TPS62202, TPS62203, TPS62207 TPS62204, TPS62205, TPS62208 www.ti.com SLVS417E – MARCH 2002 – REVISED MAY 2006 LOAD TRANSIENT RESPONSE VO 50 mV/div POWER SAVE MODE OPERATION VSW 5 V/div VO 20 mV/div IO 3 mA to 270 mA IL 100 mA/div 100 µs/div 2 µs/div Figure 13. Figure 14. START-UP VO = 1.8 V/200 mA Enable 2 V/div VO 1 V/div IL 50 mA/div 100 µs/div Figure 15.
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TPS62200,, TPS62201 TPS62202, TPS62203, TPS62207 TPS62204, TPS62205, TPS62208 www.ti.com SLVS417E – MARCH 2002 – REVISED MAY 2006 APPLICATION INFORMATION ADJUSTABLE OUTPUT VOLTAGE VERSION When the adjustable output voltage version TPS62200 is used, the output voltage is set by the external resistor divider. See Figure 16. The output voltage is calculated as ǒ1 ) R1 Ǔ R2 V out + 0.5 V • R1 + R2 ≤ 1 MΩ and internal reference voltage V(ref)typ = 0.
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TPS62200,, TPS62201 TPS62202, TPS62203, TPS62207 TPS62204, TPS62205, TPS62208 www.ti.com SLVS417E – MARCH 2002 – REVISED MAY 2006 APPLICATION INFORMATION (continued) The inductor value determines the inductor ripple current. The larger the inductor value, the smaller the inductor ripple current, and the lower the conduction losses of the converter. On the other hand, larger inductor values cause a slower load transient response.
PAGE 14
TPS62200,, TPS62201 TPS62202, TPS62203, TPS62207 TPS62204, TPS62205, TPS62208 www.ti.com SLVS417E – MARCH 2002 – REVISED MAY 2006 At nominal load current the device operates in PWM mode and the overall output voltage ripple is the sum of the voltage spike caused by the output capacitor ESR plus the voltage ripple caused by charging and discharging the output capacitor: 1– Vout Vin L f DVout + Vout ǒ8 1 Cout f Ǔ ) ESR where the highest output voltage ripple occurs at the highest input voltage Vin.
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TPS62200,, TPS62201 TPS62202, TPS62203, TPS62207 TPS62204, TPS62205, TPS62208 www.ti.com SLVS417E – MARCH 2002 – REVISED MAY 2006 TYPICAL APPLICATIONS TPS62202 VI 2.5 V to 6 V 1 2 C1 4.7 µF 3 VI SW 5 L1 10 µH C2 10 µF GND EN VO 1.8 V/300 mA FB 4 Figure 18. Li-Ion to 1.8 V Fixed Output Voltage Version TPS62202 VI 2.5 V to 6 V 1 2 C1 4.7 µF 3 VI SW 5 L1 4.7 µH C2 22 µF GND EN VO 1.8 V/300 mA FB 4 Figure 19. 1.8 V Fixed Output Voltage version Using 4.7µH Inductor TPS62200 VI 2.
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.com 10-Jun-2014 Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.
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PACKAGE MATERIALS INFORMATION www.ti.com 5-Mar-2014 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) TPS62200DBVR SOT-23 DBV 5 3000 179.0 8.4 TPS62200DBVR SOT-23 DBV 5 3000 178.0 TPS62200DBVT SOT-23 DBV 5 250 178.
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PACKAGE MATERIALS INFORMATION www.ti.com 5-Mar-2014 Device Package Package Pins Type Drawing SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) TPS62204DBVT SOT-23 DBV 5 250 178.0 9.0 TPS62204DBVT SOT-23 DBV 5 250 179.0 8.4 TPS62205DBVR SOT-23 DBV 5 3000 178.0 TPS62205DBVR SOT-23 DBV 5 3000 179.0 TPS62205DBVT SOT-23 DBV 5 250 W Pin1 (mm) Quadrant 3.23 3.17 1.37 4.0 8.0 Q3 3.2 3.2 1.4 4.0 8.0 Q3 9.0 3.23 3.17 1.37 4.0 8.
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PACKAGE MATERIALS INFORMATION www.ti.com 5-Mar-2014 Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) TPS62200DBVT SOT-23 DBV 5 250 203.0 203.0 35.0 TPS62201DBVR SOT-23 DBV 5 3000 203.0 203.0 35.0 TPS62201DBVR SOT-23 DBV 5 3000 180.0 180.0 18.0 TPS62201DBVT SOT-23 DBV 5 250 203.0 203.0 35.0 TPS62201DBVT SOT-23 DBV 5 250 180.0 180.0 18.0 TPS62202DBVR SOT-23 DBV 5 3000 180.0 180.0 18.
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IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.