MAX1567

更新时间： 2024-11-13 22:57:59

品牌	Logo	应用领域
美信 - MAXIM		数码相机
页数	文件大小	规格书
35页	1130K
描述
Six-Channel, High-Efficiency, Digital Camera Power Supplies

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数据手册

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MAX1567 数据手册

19-2882; Rev 1; 4/04

Six-Channel, High-Efficiency, Digital

Camera Power Supplies

General Description

Features

The MAX1566/MAX1567 provide a complete power-

supply solution for digital cameras. They improve perfor-

mance, component count, and size compared to con-

ventional multichannel controllers in 2-cell AA,

1-cell lithium-ion (Li+), and dual-battery designs. On-chip

MOSFETs provide up to 95% efficiency for critical power

supplies, while additional channels operate with external

FETs for optimum design flexibility. This optimizes overall

efficiency and cost, while also reducing board space.

♦ 95% Efficient Step-Up DC-to-DC Converter

♦ 0.7V Minimum Input Voltage

♦ Main DC-to-DC Configurable as Either Step-Up or

Step-Down

♦ Combine Step-Up and Step-Down for 90%

Efficient Boost-Buck

♦ 95% Efficient Step-Down for DSP Core

♦ Regulate LED Current for Four, Six, or More LEDs

♦ Open LED Overvoltage Protection

The MAX1566/MAX1567 include six high-efficiency DC-

to-DC conversion channels:

• Step-up DC-to-DC converter with on-chip power FETs

♦ Transformerless Inverting Controller (MAX1567)

• Main DC-to-DC converter with on-chip FETs, config-

♦ Three Extra PWM Controllers (Two on the

urable to step either up or down

MAX1567)

• Step-down core DC-to-DC converter with on-chip

♦ Up to 1MHz Operating Frequency

♦ 1µA Shutdown Mode

♦ Soft-Start and Overload Protection

♦ Compact 40-Pin 6mm x 6mm Thin QFN Package

FETs

• DC-to-DC controller for white LEDs or other output

• Extra DC-to-DC controller (typically for LCD); two

extra controllers on the MAX1566

• Transformerless inverting DC-to-DC controller (typi-

cally for negative CCD bias) on the MAX1567

Ordering Information

AUX2

FUNCTION

PART

TEMP RANGE PIN-PACKAGE

All DC-to-DC channels operate at one fixed frequency

settable from 100kHz to 1MHz to optimize size, cost, and

efficiency. Other features include soft-start, power-OK

outputs, and overload protection. The MAX1566/

MAX1567 are available in space-saving 40-pin thin QFN

packages. An evaluation kit is available to expedite

designs.

40 Thin QFN

6mm x 6mm

Step-up

controller

MAX1566ETL -40°C to +85°C

MAX1567ETL -40°C to +85°C

40 Thin QFN

6mm x 6mm

Inverting

controller

Applications

Pin Configuration

Digital Cameras

TOP VIEW

PDAs

40 39 38 37 36 35 34 33

32 31

Typical Operating Circuit

FB3H

CC1

CC2

ON2

Li+ OR 2AA

BATTERY INPUT

MAX1567

28 PVM

FB1

ON1

LXM

SYSTEM 5V

3.3V LOGIC

1.8V CORE

STEP-UP

MAIN DC-TO-DC

STEP-DN

AUX3

PGSD

LXSD

PVSD

ONSD

FBSD

CCSD

PGM

PVSU

LXSU

PGSU

OSC

MAX1566/MAX1567

ONSU

ONM

ONSD

ON3(LED)

ON1

SDOK

LEDS

AUX1

CCD/LCD + 15V

CCD - 7.5V

16 17 18 19 20

13 14

AUX2

ON2

6mm x 6mm

THIN QFN

________________________________________________________________ Maxim Integrated Products

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

12 3 4 5 6 7...35

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与MAX1567相关器件

型号	品牌	获取价格	描述	数据表
MAX1567ETL	MAXIM	获取价格	PLASTIC ENCAPSULATED DEVICES
MAX1567ETL	ROCHESTER	获取价格	3.6A SWITCHING REGULATOR, 1000kHz SWITCHING FREQ-MAX, PQCC40, 6 X 6 MM, MO-220, TQFN-40
MAX1567ETL+	MAXIM	获取价格	Switching Regulator, Current-mode, 3.6A, 1000kHz Switching Freq-Max, BICMOS, PQCC40, 6 X 6
MAX1567ETL+T	MAXIM	获取价格	Switching Regulator, Current-mode, 3.6A, 1000kHz Switching Freq-Max, BICMOS, PQCC40, 6 X 6
MAX1567ETL-T	MAXIM	获取价格	Switching Regulator, Current-mode, 3.6A, 1000kHz Switching Freq-Max, BICMOS, PQCC40, 6 X 6
MAX156ACNG	MAXIM	获取价格	8-/4-Channel ADCs with Simultaneous T/Hs and Reference
MAX156ACNG+	MAXIM	获取价格	ADC, Successive Approximation, 8-Bit, 1 Func, 4 Channel, Parallel, 8 Bits Access, PDIP24,
MAX156ACWI	MAXIM	获取价格	8-/4-Channel ADCs with Simultaneous T/Hs and Reference
MAX156ACWI+	MAXIM	获取价格	ADC, Successive Approximation, 8-Bit, 1 Func, 4 Channel, Parallel, 8 Bits Access, PDSO28,
MAX156ACWI-T	MAXIM	获取价格	ADC, Successive Approximation, 8-Bit, 1 Func, 4 Channel, Parallel, 8 Bits Access, PDSO28,

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