MC33466 查看數據表（PDF） - Motorola => Freescale

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产品描述 (功能)

生产厂家

MC33466

FIXED FREQUENCY PWM MICROPOWER DC–to–DC CONVERTER

Motorola => Freescale 

Vin

5.0 V

100 µF

MC33466

Figure 20. Micropower Step–Down Application

Startup Circuit

MC33464N–30ATR

MMBT2222ALT1

2

In

1

Out

Gnd

3 10 k

MMBT2907ALT1

1.0 k

10 k

47 µH

MBRD0520LT1

VO

3.3 V

300 mA

100

3

Lx

MC33466H–33JT1

VLx Limiter

Drive

PWM

Controller

50 kHz

Oscillator

Phase

Comp

Soft–Start

Vref

2

Output

100 µF

1 Gnd

NOTE: Using the MC33464N–30ATR reduces current drawn in the startup circuit to 1 mA during normal operation.

MOTOROLA ANALOG IC DEVICE DATA

9

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