MAX17005 查看數據表（PDF） - Maxim Integrated

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MAX17005

1.2MHz Low-Cost, High-Performance Chargers

Maxim Integrated 

1.2MHz Low-Cost,

High-Performance Chargers

IINP ACIN

ACOK

CSSP

CSSN

CSA

A = 17.5V/V

GND

CC

BATT

VCTL

GMS

60mV

CELL

SELECT

LOGIC

BDIV

GMV

VAA

CSI

CSIP

CSA

A = 17.5V/V

CSIN

GMI

LDO

Gm =

2.8μA/mV

VAA/2

VCTL + 100mV

BDIV

10mV

LOWEST

VOLTAGE

CLAMP

110mV

BATT

DCIN

4.2V

VAA

REFERENCE

POWER

FAIL

OVP

IMIN

DC-DC

CONVERTER

CCMP

IMAX

IZX

5.4V LINEAR

REGULATOR

LEVEL

SHIFT

HIGH-SIDE

DRIVER

LDO

LOW-SIDE

DRIVER

LDO

BST

DHI

LX

DLO

PGND

PWM

FILTER

ISET

26mV

CHARGER 10mV

SHUTDOWN

MAX17005

MAX17006

MAX17015

Figure 2. Functional Diagram

The MAX17005/MAX17006/MAX17015 feature a volt-

age-regulation loop (CCV) and two current-regulation

loops (CCI and CCS). The loops operate independently

of each other. The CCV voltage-regulation loop moni-

tors BATT to ensure that its voltage never exceeds the

voltage set by VCTL. The CCI battery charge current-

regulation loop monitors current delivered to BATT to

ensure that it never exceeds the current limit set by

ISET. The charge current-regulation loop is in control as

long as the battery voltage is below the set point. When

the battery voltage reaches its set point, the voltage-

regulation loop takes control and maintains the battery

voltage at the set point. A third loop (CCS) takes control

and reduces the charge current when the adapter cur-

rent exceeds the input current limit.

The MAX17005/MAX17006/MAX17015 have single-

point compensation. The two current loops are internal-

ly compensated while the voltage loop is compensated

with a series RC network at CC pin. See the CC Loop

Compensation section for the resistor and capacitor

selection. A functional diagram is shown in Figure 2.

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