Datasheet > MCP16252

MCP16252

更新时间： 2024-02-18 15:07:52

品牌	Logo	应用领域
美国微芯 - MICROCHIP		稳压器
页数	文件大小	规格书
34页	1299K
描述
Low Quiescent Current, PFM/PWM Synchronous Boost Regulator

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MCP16252 技术参数

是否Rohs认证：	符合	生命周期：	Active
Reach Compliance Code：	compliant	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	Factory Lead Time：	5 weeks
风险等级：	1.7	模拟集成电路 - 其他类型：	BATTERY CHARGE CONTROLLER
JESD-609代码：	e4	湿度敏感等级：	1
峰值回流温度（摄氏度）：	260	端子面层：	Nickel/Palladium/Gold (Ni/Pd/Au)
处于峰值回流温度下的最长时间：	40	Base Number Matches：	1

MCP16252 数据手册

MCP16251/2

Low Quiescent Current, PFM/PWM Synchronous Boost Regulator

with True Output Disconnect or Input/Output Bypass Option

Features:

Applications:

• Up to 96% Typical Efficiency

• One, Two and Three Cell Alkaline and NiMH/NiCd

Portable Products

• 650 mA Typical Peak Input Current Limit:

- I_OUT> 100 mA @ 3.3V V_OUT, 1.2V V_IN

- I_OUT> 250 mA @ 3.3V V_OUT, 2.4V V_IN

- I_OUT> 225 mA @ 5.0V V_OUT, 3.3V V_IN

• Low Device Quiescent Current:

• Solar Cell Applications

• Personal Care and Medical Products

• Bias for Status LEDs

• Smartphones, MP3 Players, Digital Cameras

• Remote controllers, Portable Instruments

• Wireless Sensors

- Output Quiescent Current: < 4 µA typical, 

device is not switching (V_OUT> V_IN,

excluding feedback divider current)

• Bluetooth Headsets

- Input Sleep Current: 1 µA

• +3.3V to +5.0V Distributed Power Supply

- No Load Input Current: 14 µA typical

• Shutdown Current: 0.6 µA typical

• Low Start-up Voltage: 0.82V, 1 mA load

• Low Operating Input Voltage: down to 0.35V

• Adjustable Output Voltage Range: 1.8V to 5.5V

• Maximum Input Voltage  V_OUT< 5.5V

• Automatic PFM/PWM Operation:

- PWM Operation: 500 kHz

General Description

The MCP16251/2 is a compact, high-efficiency, fixed

frequency, synchronous step-up DC-DC converter.

This family of devices provides an easy-to-use power

supply solution for applications powered by either

one-cell, two-cell or three-cell alkaline, NiCd, NiMH,

one-cell Li-Ion or Li-Polymer batteries.

A low-voltage technology allows the regulator to start

up without high inrush current or output voltage

overshoot from a low voltage input. High efficiency is

accomplished by integrating the low-resistance

N-Channel boost switch and synchronous P-Channel

switch. All compensation and protection circuitry are

integrated to minimize external components.

MCP16251/2 operates and consumes less than 14 µA

from battery, while operating at no load (V_OUT= 3.3V,

V_IN= 1.5V). The devices provide a true disconnect

from input to output (MCP16251) or an input-to-output

bypass (MCP16252), while in shutdown (EN = GND).

Both options consume less than 0.6 µA from battery.

- PFM Output Ripple: 150 mV typical

• Feedback voltage: 1.23V

• Internal Synchronous Rectifier

• Internal Compensation

• Inrush Current Limiting and Internal Soft Start

(1.5 ms typical)

• Selectable, Logic Controlled, Shutdown States:

- True Load Disconnect Option (MCP16251)

- Input to Output Bypass Option (MCP16252)

•

Anti-Ringing Control

• Overtemperature Protection

• Available Packages:

- SOT-23-6

Output voltage is set by a small external resistor

divider. Two package options, SOT-23-6 and

2 x 3 TDFN-8, are available.

- 2 x 3 8-Lead TDFN

Package Types

MCP16251/2

6-Lead SOT-23

2x3 TDFN*

V_IN

V_FB

V_IN

GND

S_GND

V_OUTS

V_OUT

V_FB

P_GND

V_OUTP

* Includes Exposed Thermal Pad (EP); see Table 3-1.

 2013 Microchip Technology Inc.

DS25173A-page 1

12 3 4 5 6 7...34

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