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Part: TPS60302
Category:
Power Management
-> Regulators
-> Switching Regulators
Description:
Company: Texas Instruments, Inc.
Datasheet: Download TPS60302 datasheet File size : 1534 kB
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Datasheet text preview:
TPS60300, TPS60301, TPS60302, TPS60303 SINGLE-CELL TO 3.0-V/3.3-V, 20-mA DUAL OUTPUT, HIGH-EFFICIENCY CHARGE PUMP
SLVS302A DECEMBER 2000 REVISED MARCH 2001
features
applications
D Regulated 3-V or 3.3-V Output Voltage With D D D D D D D D
up to 20-mA Output Current From a 0.9-V to 1.8-V Input Voltage Range High Power Conversion Efficiency (up to 90%) Over a Wide Output Current Range, Optimized for 1.2-V Battery Voltage Additional Output With 2 Times VIN (OUT1) Device Quiescent Current Less Than 35 µA Supervisor Included; Open Drain or Push-Pull Power Good Output No Inductors Required/Low EMI Only Five Small, 1-µF Ceramic Capacitors Required Load Isolated From Battery During Shutdown Microsmall 10-Pin MSOP Package
D D D D D D D
Pagers Battery-Powered Toys Portable Measurement Instruments Home Automation Products Medical Instruments (Like Hearing Instruments) Metering Applications Using MSP430 Microcontroller Portable Smart Card Readers
DGS PACKAGES (TOP VIEW)
EN C1 VIN C1+ OUT1
1 2 3 4 5
10 9 8 7 6
PG GND C2 C2+ OUT2
description
The TPS6030x step-up, regulated charge pumps generate a 3-V ±4% or 3.3-V ±4% output voltage from a 0.9-V to 1.8-V input voltage (one alkaline, NiCd, or NiMH battery).
ACTUAL SIZE 3,05 mm x 4,98 mm
Only five small 1-µF ceramic capacitors are required to build a complete high efficiency dc/dc charge pump converter. To achieve the high efficiency over a wide input voltage range, the charge pump automatically selects between a 3x or 4x conversion mode.
typical application circuit
ALKALINE BATTERY OPERATING TIME
1.6 C1F 1 µF 2 INPUT 0.9 V to 1.8 V CIN 1 µF C1 3 VIN + TPS60300 OUT2 1 OFF/ON 4 C1+ 8 C2 C2F 1 µF 7 5 + 6 R EN GND 9 PG 10 C(OUT1) 1 µF 2× IN Max 40 mA 3.3 V ±4% Max 20 mA + C(OUT2) 1 µF Battery Voltage V C2+ OUT1 1.5 1.4 1.3 1.2 1.1 1 0.9 0.8 0.7 0.6 V Battery Efficiency 100 90 80 70 60 50 40 30 20 10 0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 Operating Time Efficiency %
Operating time (hours) with an alkaline battery (2000 mAh) until power good goes low @ lL = 20 mA 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.
Copyright 2001, Texas Instruments Incorporated
PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters.
POST OFFICE BOX 655303
· DALLAS, TEXAS 75265
1
TPS60300, TPS60301, TPS60302, TPS60303 SINGLE-CELL TO 3.0-V/3.3-V, 20-mA DUAL OUTPUT, HIGH-EFFICIENCY CHARGE PUMP
SLVS302A DECEMBER 2000 REVISED MARCH 2001
description (continued)
Output 1 (OUT1) can deliver a maximum of 40 mA, from a 1-V input, with output 2 (OUT2) not loaded. OUT2 can deliver a maximum of 20 mA, from a 1-V input, with OUT1 not loaded. Both outputs can be loaded in the same time, but the total output current of the first voltage doubler must not exceed 40 mA. For example, the load at OUT1 is 20 mA and the load at output 2 is 10 mA. The devices operate in the newly developed LinSkip mode. In this operating mode, the device switches seamlessly from the power saving, pulse-skip mode at light loads, to the low-noise, constant-frequency linear-regulation mode, once the output current exceeds the device-specific output current threshold. A power-good function supervises the output voltage of OUT2 and can be used for power up and power down sequencing. Power good (PG) is offered as either open-drain or push-pull output.
AVAILABLE OPTIONS PART NUMBER TPS60300DGS TPS60301DGS TPS60302DGS TPS60303DGS MARKING DGS PACKAGE ALF ALG ALI ALK OUTPUT CURRENT 1 [mA] 40 40 40 40 OUTPUT CURRENT 2 [mA]§ 20 20 20 20 OUTPUT VOLTAGE 1 [V] 2 x VIN 2 x VIN 2 x VIN 2 x VIN OUTPUT VOLTAGE 2 [V] 3.3 3.0 3.3 3.0 FEATURE Open-drain power-good output Open-drain power-good output Push-pull power-good output
Push-pull power-good output The DGS package is available taped and reeled. Add R suffix to device type (e.g. TPS60300DGSR) to order quantities of 2500 devices per reel. If OUT2 is not loaded § If OUT1 is not loaded
2
POST OFFICE BOX 655303
· DALLAS, TEXAS 75265
TPS60300, TPS60301, TPS60302, TPS60303 SINGLE-CELL TO 3.0-V/3.3-V, 20-mA DUAL OUTPUT, HIGH-EFFICIENCY CHARGE PUMP
SLVS302A DECEMBER 2000 REVISED MARCH 2001
TPS60300 and TPS60301 functional block diagram
C1F C1 C1+
VIN
CP1 2x (Doubler) Charge Pump
OUT1
_ EN Control Oscillator + _ Reg + Vref CP2 1.5x/2x Charge Pump + _
PG (Push-Pull Output for TPS60302 and TPS60303)
OUT2
C2 GND C2F
C2+
Terminal Functions
TERMINAL NAME C1+ C1 C2+ C2 EN NO. 4 2 7 8 1 I I/O Positive terminal of the flying capacitor C1F Negative terminal of the flying capacitor C1F Positive terminal of the flying capacitor C2F Negative terminal of the flying capacitor C2F Device-enable input EN = Low disables the device. Output and input are isolated in shutdown mode. EN = High enables the device. GND OUT1 OUT2 9 5 6 O O GROUND 2 × VIN power output. Bypass OUT1 to GND with the output filter capacitor C(OUT1). Regulated 3.3-V power output (TPS60300, TPS60302) or 3-V power output (TPS60301, TPS60303), respectively Bypass OUT2 to GND with the output filter capacitor C(OUT2). PG 10 O Power good detector output. As soon as the voltage on OUT2 reaches about 98% of its nominal value this pin goes high. Open drain output on TPS60300 and TPS60301. A pullup resistor should be connected between PG and OUT1 or OUT2. Push-pull output stage on TPS60302 and TPS60303 VIN 3 I Supply input. Bypass VIN to GND with a 1-µF capacitor. DESCRIPTION
POST OFFICE BOX 655303
· DALLAS, TEXAS 75265
3
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