Datasheet > ZSPM4551

ZSPM4551

更新时间： 2024-02-06 02:58:18

品牌	Logo	应用领域
艾迪悌 - IDT		/
页数	文件大小	规格书
29页	463K
描述
High-Efficiency Charger for Li-Ion Batteries

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ZSPM4551 数据手册

ZSPM4551

High-Efficiency Charger

for Li-Ion Batteries

Datasheet

Brief Description

Features

The ZSPM4551 is a DC/DC synchronous switching

lithium-ion (Li-Ion) battery charger with fully inte-

grated power switches, internal compensation, and

full fault protection.

•

VBAT reverse-current blocking

•

Programmable temperature-compensated

termination voltage: 3.94V to 4.18V ± 1%

•

User programmable maximum charge current:

50mA to 1500mA

Its switching frequency of 1MHz enables the use of

small filter components, resulting in smaller board

space and reduced BOM costs.

•

Current mode PWM control in constant voltage

Supervisor for VBAT reported at the NFLT pin

Input supply under-voltage lockout

In Full-Charge Constant-Current Mode, the regula-

tion is for constant current (CC). Once termination

voltage is reached, the regulator operates in voltage

mode. When the regulator is disabled (the EN pin is

low), the device draws 10µA (typical) quiescent

current.

Full protection for over-current, over-temperature,

VBAT over-voltage, and charging timeout

•

Charge status indication

I²C™ program interface with EEPROM registers

The ZSPM4551 includes supervisory reporting

through the NFLT (inverted fault) open-drain output

to interface other components in the system. Device

programming is achieved by an I²C™* interface

through the SCL and SDA pins.

Related IDT Smart Power Products

•

ZSPM4121 Ultra-low Power Under-Voltage

Switch

•

ZSPM4141 Ultra-Low-Power Linear Regulator

Benefits

Physical Characteristics

•

Up to 1.5A of continuous output current in Full-

Charge Constant-Current (CC) Mode

•

Wide input voltage range: V_BAT+ 0.3V (3.5V min.)

to 7.2V

•

High efficiency – up to 92% with typical loads

•

Junction operating temperature: -40°C to 125°C

Package: 16-pin PQFN (4mm x 4mm)

Available Support

•

Evaluation Kit

ZSPM4551 Application Circuit

•

Support Documentation

ZSPM4551

VIN

VTH_REF

C_IN

R_REF

GND

VTHERM

C_VDD

R_SENSE

L_OUT

Battery

VDD

SCL

C_OUT

R_THM

VSENSE

VDD

R_PULLUP

(optional)

SDA

VBAT

NFLT

VDD

R_PULLUP

(optional)

PGND

* I²C™ is a trademark of NXP.

January 29, 2016

12 3 4 5 6 7...29

中文翻译

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