UNISONIC TECHNOLOGIES CO., LTD

UMC33167

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LINEAR INTEGRATED CIRCUIT

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Copyright © 2015 Unisonic Technologies Co., Ltd

QW-R103-070.c

5.0A, STEP-UP/DOWN/

INVERTING SWITCHING

REGULATORS

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DESCRIPTION

The UTC UMC33167 series are high performance fixed frequency

power switching regulators that contain the primary functions required

for dc-to-dc converters. This series was specifically designed to be

incorporated in step-down and voltage-inverting configurations with a

minimum number of external components and can also be used cost

effectively in step-up applications.

These devices consist of an internal temperature compensated

reference, fixed frequency oscillator with on-chip timing components,

latching pulse width modulator for single pulse metering, high gain

error amplifier, and a high current output switch.

Protective features consist of cycle-by-cycle current limiting,

undervoltage lockout, and thermal shutdown. Also included is a low

power standby mode that reduces power supply current to 36μA.

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FEATURES

* Output Switch Current in Excess of 5.0A

* Fixed Frequency Oscillator (72kHz) with On-Chip Timing

* Provides 5.05V Output without External Resistor Divider

* Precision 2% Reference

* 0% ~ 95% Output Duty Cycle

* Cycle-by-Cycle Current Limiting

* Undervoltage Lockout with Hysteresis

* Internal Thermal Shutdown

* Operation from 7.5V ~ 40V

* Standby Mode Reduces Power Supply Current to 36μA

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ORDERING INFORMATION

Ordering Number

Package

Packing

Lead Free

Halogen Free

UMC33167L-TA5-T

UMC33167G-TA5-T

TO-220-5

Tube

UMC33167L-TB5-T

UMC33167G-TB5-T

TO-220B

Tube

MC33167L-TA5-T

(1) Packing Type

(2) Package Type

(3) Green Package

(1) T: Tube

(2) TA5: TO-220-5, TB5: TO-220B

(3) L: Lead Free, G: Halogen Free and Lead Free