Datasheet > MAX1565

MAX1565

更新时间： 2024-11-17 14:57:59

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MAX1565 数据手册

19-2712; Rev 0; 1/03

Small, High-Efficiency, Five-Channel

Digital Still Camera Power Supply

General Description

Features

The MAX1565 provides a complete power-supply solution

for digital still and video cameras through the integration

of ultra-high-efficiency step-up/step-down DC-to-DC con-

verters along with three auxiliary step-up controllers. The

MAX1565 is targeted for applications that use either 2 or

3 alkaline or NiMH batteries as well as those using a

single lithium-ion (Li+) battery.

ꢀ Step-Up DC-to-DC Converter

95% Efficient

3.3V (Fixed) or 2.7V to 5.5V (Adjustable) Output

Voltage

ꢀ Step-Down DC-to-DC Converter

Operate from Battery for 95% Efficient Buck

Combine with Step-Up for 90% Efficient Buck-

Boost

The step-up DC-to-DC converter accepts inputs from

0.7V to 5.5V and regulates a resistor-adjustable output

from 2.7V to 5.5V. It uses internal MOSFETs to achieve

95% efficiency. Adjustable operating frequency facili-

tates design for optimum size, cost, and efficiency.

Adjustable Output Down to 1.25V

ꢀ Three Auxiliary PWM Controllers

ꢀ Up to 1MHz Operating Frequency

ꢀ 1µA Shutdown Mode

The step-down DC-to-DC converter can produce output

voltages as low as 1.25V and also utilizes internal

MOSFETs to achieve 95% efficiency. An internal soft-

start ramp minimizes surge current from the battery.

The converter can operate from the step-up output pro-

viding buck-boost capability with up to 90% compound

efficiency, or it can run directly from the battery if buck-

boost operation is not needed.

ꢀ Internal Soft-Start Control

ꢀ Overload Protection

ꢀ Compact 32-Pin, 5mm x 5mm Thin QFN Package

The MAX1565 features auxiliary step-up controllers that

power CCD, LCD, motor actuator, and backlight cir-

cuits. The device also features low-cost expandability

by supplying power, an oscillator signal, and a refer-

ence to the MAX1801 SOT23 slave controller that sup-

ports step-up, SEPIC, and flyback configurations.

Ordering Information

PART

TEMP RANGE

PIN-PACKAGE

MAX1565ETJ

-40°C to +85°C

32 Thin QFN

The MAX1565 is available in a space-saving 32-pin thin

QFN package.

Pin Configuration

Applications

TOP VIEW

Digital Still Cameras

Digital Video Cameras

PDAs

32 31 30 29 28 27 26 25

COMP1

FB1

24 COMP3

SDOK

Typical Operating Circuit

22 OUTSUA

21 LXSU

PGNDA

LXSD

INPUT

+0.7V TO +5.5V

MAX1565

INSD

20 PGNDB

19 OSC

MAX1565

ONSD

COMPSD

FBSD

STEP-UP

STEP-DOWN

AUX1

MAIN +3.3V

18 FBSEL1

17 FBSELSD

CORE +1.5V

10 11 12 13 14 15 16

ONSU

ONSD

ON1

MOTOR +5V

ON/OFF

AUX2

CCD +15V/-7.5V

LCD, LED +15V

CONTROLS

ON2

0N3

AUX3

5mm x 5mm

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...26

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与MAX1565相关器件

型号	品牌	获取价格	描述	数据表
MAX1565ETJ	MAXIM	获取价格	Small, High-Efficiency, Five-Channel Digital Still Camera Power Supply
MAX1565ETJ+T	MAXIM	获取价格	Switching Regulator, Current-mode, 3.6A, 1000kHz Switching Freq-Max, BICMOS, 5 X 5 MM, 0.8
MAX1565ETJ-T	MAXIM	获取价格	Switching Regulator, Current-mode, 3.6A, 1000kHz Switching Freq-Max, BICMOS, 5 X 5 MM, 0.8
MAX1565EVKIT	MAXIM	获取价格	Evaluation Kit for the MAX1565
MAX1566	MAXIM	获取价格	Six-Channel, High-Efficiency, Digital Camera Power Supplies
MAX1566\|MAX1567	MAXIM	获取价格	Six-Channel. High-Efficiency. Digital Camera Power Supplies
MAX1566ETL	MAXIM	获取价格	Switching Regulator, Current-mode, 3.6A, 1000kHz Switching Freq-Max, BICMOS, PQCC40, 6 X 6
MAX1566ETL	ROCHESTER	获取价格	3.6A SWITCHING REGULATOR, 1000kHz SWITCHING FREQ-MAX, PQCC40, 6 X 6 MM, MO-220, TQFN-40
MAX1566ETL+	MAXIM	获取价格	Switching Regulator, Current-mode, 3.6A, 1000kHz Switching Freq-Max, BICMOS, PQCC40, 6 X 6
MAX1566ETL+	ROCHESTER	获取价格	3.6A SWITCHING REGULATOR, 1000kHz SWITCHING FREQ-MAX, PQCC40, 6 X 6 MM, MO-220, TQFN-40

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