Datasheet > MAX77342EWE+T

MAX77342EWE+T

更新时间： 2024-01-25 20:45:19

品牌	Logo	应用领域
美信 - MAXIM		信息通信管理开关输出元件
页数	文件大小	规格书
50页	1980K
描述
Switching Controller, Voltage-mode, 1.6A, 4000kHz Switching Freq-Max, BICMOS, PBGA16, WLP-16

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技术参数
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MAX77342EWE+T 技术参数

是否无铅：	不含铅	是否Rohs认证：	符合
生命周期：	Obsolete	包装说明：	VFBGA, BGA16,4X4,20
Reach Compliance Code：	compliant	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	5.82
其他特性：	ALSO OPERATES WITH 2V TO 2.5V WITH LIMITED OPERATION; OUTPUT IS ADJUSTABLE FROM 2.5V TO 5.15V	模拟集成电路 - 其他类型：	SWITCHING CONTROLLER
控制模式：	VOLTAGE-MODE	控制技术：	PULSE WIDTH MODULATION
最大输入电压：	5.5 V	最小输入电压：	2.5 V
标称输入电压：	3.6 V	JESD-30 代码：	S-PBGA-B16
长度：	2.065 mm	功能数量：	1
端子数量：	16	最高工作温度：	85 °C
最低工作温度：	-40 °C	最大输出电流：	1.6 A
封装主体材料：	PLASTIC/EPOXY	封装代码：	VFBGA
封装等效代码：	BGA16,4X4,20	封装形状：	SQUARE
封装形式：	GRID ARRAY, VERY THIN PROFILE, FINE PITCH	峰值回流温度（摄氏度）：	NOT SPECIFIED
认证状态：	Not Qualified	座面最大高度：	0.69 mm
子类别：	Switching Regulator or Controllers	表面贴装：	YES
切换器配置：	BOOST	最大切换频率：	4000 kHz
技术：	BICMOS	温度等级：	INDUSTRIAL
端子形式：	BALL	端子节距：	0.5 mm
端子位置：	BOTTOM	处于峰值回流温度下的最长时间：	NOT SPECIFIED
宽度：	2.065 mm	Base Number Matches：	1

MAX77342EWE+T 数据手册

MAX77342

1.6A Adaptive DC-DC Step-Up Converter

with High-Side Flash Driver

General Description

The MAX77342 provides a highly efficient solution for cell

phone camera flash applications by integrating a 1.6A

PWM DC-DC step-up converter and three programmable

Features

●ꢀ 2.0Vꢀtoꢀ5.5VꢀOperationꢀRange

• 2.5V to 5.5V with Full Functionality

• 2.0Vꢀtoꢀ2.5VꢀwithꢀDataꢀRetention

high-side, low-dropout LED current regulators. An I C

●ꢀ Step-UpꢀDC-DCꢀConverter

interface provides flexible control of the step-up converter,

indicator, assist, torch, and flash mode selection, and

flash safety timer duration settings.

• 1.6A Guaranteed Output Current for V ꢀ≥ꢀ3.0V

and V

ꢀ≤ꢀ4.2V

OUT

• AdaptiveꢀOutputꢀVoltageꢀRegulationꢀEnsuring

HighestꢀSystemꢀEfficiencyꢀUpꢀtoꢀ90%

• Downꢀtoꢀ3.125%ꢀDutyꢀCycle

• On-ChipꢀPowerꢀMOSFETꢀandꢀSynchronousꢀRectifier

• 1MHz/2MHz/4MHz PWM Switching Frequency

• Smallꢀ1μHꢀInductor

The device operates down to 2.5V, making it future proof

for new battery technologies. The step-up converter fea-

tures an internal switching MOSFET and synchronous

rectifier to improve efficiency and minimize external

component count. Three high-side, high-current regula-

tors provide support for indicator, assist, torch, and flash

modes. They can source up to 1600mA in flash mode,

100mA in torch and assist light mode, and 16mA for

indicator. The output voltage is adaptively controlled,

stepping up voltage only as high as necessary to sup-

port the required LED forward voltage in flash mode. This

approach reduces IC power dissipation by optimizing the

step-up ratio and by minimizing the losses in the current

regulator. In torch, assist light, and indicator, the current

regulators are powered directly from IN, providing the

highest system efficiency.

ꢀ

●ꢀ High-SideꢀFlash/Torch/IndicatorꢀLEDꢀCurrentꢀRegulator

• I C Programmable Flash Output Current (100mA

to 1600mA in 100mA Steps)

• I C Programmable Torch Output Current (30mA to

100mA in 10mA Steps)

• I C Programmable Indicator Output Current (1mA

to 16mA in 1mA Steps)

• AdaptiveꢀRegulationꢀVoltageꢀ(150mVꢀtyp)ꢀforꢀFlashꢀꢀ

Mode

Additionally, the device includes a low input voltage

protection function that reduces flash current during low

battery conditions to prevent system undervoltage lockup.

• Low-Dropout Voltage (100mV max) for Torch Mode

●ꢀ I C Programmable Flash Safety Timer

●ꢀ Open/ShortꢀLEDꢀDetection

Other features include shorted LED detection, overvolt-

age and thermal shutdown protection, and low-power

standby and shutdown modes. The MAX77342 is avail-

able in a 16-bump, 0.5mm pitch WLP package (2.065mm

x 2.065mm).

●ꢀ TxꢀMaskꢀReducingꢀOutputꢀCurrentꢀDuringꢀTxꢀEvent

●ꢀ OvervoltageꢀProtection

●ꢀ ThermalꢀShutdownꢀProtection

●ꢀ 1μAꢀShutdownꢀCurrent

●ꢀ 16-Bump,ꢀ0.5mmꢀPitch,ꢀ2.065mmꢀxꢀ2.065mmꢀWLP

Simpliﬁed Block Diagram

Applications

●ꢀ CellꢀPhonesꢀandꢀSmartphones

BATTERY

2.5V TO 5.5V

OUT

IN_FLED

PGND

MAX77342

Ordering Information appears at end of data sheet.

FLED

AGND

For related parts and recommended products to use with this part, refer

to www.maximintegrated.com/MAX77342.related.

SDA

IND

SCL

TORCH_EN

FLASH_STB

TX_MASK

19-6754; Rev 0; 9/13

12 3 4 5 6 7...50

中文翻译

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与MAX77342EWE+T相关器件

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MAX77387EWP+T	MAXIM	获取价格	Dual Switching Controller,
MAX773C/D	MAXIM	获取价格	5V/12V/15V or Adjustable, High-Efficiency, Low IQ, Step-Up DC-DC Controllers
MAX773CPA	MAXIM	获取价格	Analog IC
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MAX773CSD	MAXIM	获取价格	5V/12V/15V or Adjustable, High-Efficiency, Low IQ, Step-Up DC-DC Controllers
MAX773CSD+T	MAXIM	获取价格	Switching Controller, Current-mode, 1A, 300kHz Switching Freq-Max, BICMOS, PDSO14, SO-14
MAX773CSD-T	MAXIM	获取价格	Switching Controller, Current-mode, 1A, 300kHz Switching Freq-Max, BICMOS, PDSO14, SO-14

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