Texas Instruments TPS5102 Data Sheet Manual

TPS5102

DUAL, HIGH-EFFICIENCY CONTROLLER FOR NOTEBOOK PC POWER

SLVS239 - SEPTEMBER 1999

Dual, Step-Down for Notebook System DBT PACKAGE (TOP VIEW)

Power 4.5 V to 25 V Input Voltage Range

INV1 LH1

Adjustable Output Voltage

FB1 OUT1_u

95% Efficiency Achievable SOFTSTART1 LL1

PWM/Skip Mode Control Maintains High PWM_SKIP OUT1_d Efficiency Under Light Load Conditions CT OUTGND1 RT TRIP1

Fixed-Frequency Operation

GND VCC_CNTP

Resistorless Current Protection

REF TRIP2

Fixed High-Side Driver Voltage

STBY1 VREF5

Low Quiescent Current (0.6 m A, <1 µA for STBY2 REG5V_IN Standby) VCC OUTGND2

Small 30-Pin TSSOP COMP OUT2_d SOFTSTART2 LL2

EVM Available (TPS5102EVM-135)

FB2 OUT2_u INV2 LH2

description The TPS5102 is a dual, high efficiency controller designed for notebook system power requirements. Under light load conditions, high efficiency is maintained as the controller switches from the PWM mode to the lower frequency Skip mode. These two operating modes, along with the synchronous-rectifier drivers, dead-time, and very low quiescent current, allow power to be conserved and the battery life extended, under all load conditions. The resistor-less current protection and fixed high-side driver voltage simplify the system design and reduce the external parts count. The wide input voltage range and adjustable output voltages allow flexibility for using the TPS5102 in notebook power supply applications.

TPS5102DBT D1 Vo1

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  1999, 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.

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