MAXIM MAX8662, MAX8663 User Manual

MAX8662/MAX8663

Power-Management ICs for

Single-Cell, Li+ Battery-Operated Devices

________________________________________________________________

Maxim Integrated Products

1

Ordering Information

19-0732; Rev 0; 2/07

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.

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General Description

The MAX8662/MAX8663 power-management ICs
(PMICs) are efficient, compact devices suitable for
smart cellular phones, PDAs, Internet appliances, and
other portable devices. They integrate two synchronous
buck regulators, a boost regulator driving two to seven
white LEDs, four low-dropout linear regulators (LDOs),
and a linear charger for a single-cell Li-ion (Li+) battery.

Maxim’s Smart Power Selector™ (SPS) safely distrib­utes power between an external power source (AC
adapter, auto adapter, or USB source), battery, and the
system load. When system load peaks exceed the
external source capability, the battery supplies supple­mental current. When system load requirements are
small, residual power from the external power source
charges the battery. A thermal-limiting circuit limits bat­tery-charge rate and external power-source current to
prevent overheating. The PMIC also allows the system
to operate with no battery or a discharged battery.

The MAX8662 is available in a 6mm x 6mm, 48-pin thin
QFN package, while the MAX8663, without the LED driver,
is available in a 5mm x 5mm, 40-pin thin QFN package.

Features

Applications

+

Denotes a lead-free package.

*

EP = Exposed paddle.

PART

TEMP

PIN-PACKAGE

PKG

CODE

MAX8662ETM+

-40°C to

48 Thin QFN-EP*

T4866-1

MAX8663ETL+

-40°C to

40 Thin QFN-EP*

T4055-1

Two 95%-Efficient 1MHz Buck Regulators

Main Regulator: 0.98V to V

IN

at 1200mA

Core Regulator: 0.98V to V

IN

at 900mA

1MHz Boost WLED Driver

Drives Up to 7 White LEDs at 30mA (max)
PWM and Analog Dimming Control

Four Low-Dropout Linear Regulators

1.7V to 5.5V Input Range
15µA Quiescent Current

Single-Cell Li+ Charger

Adapter or USB Input
Thermal-Overload Protection

Smart Power Selector (SPS)

AC Adapter/USB or Battery Source
Charger-Current and System-Load Sharing

Smart Phones and PDAs

MP3 and Portable Media Players

Palmtop and Wireless Handhelds

TOP VIEW

MAX8662

THIN QFN

(6mm x 6mm)

13

14

15

16

17

18

19

20

21

22

23

24

THM

ISET

CT

REF

GND

OUT4

IN45

OUT5

EN4

EN5

PWM

FB1

48

47

46

45

44

43

42

41

40

39

38

37

1

2

345678910

11

12

POK

PSET

SL2

SL1

VL

OUT7

IN67

OUT6

PG3

LX3

EN7

EN6

CEN

CHG

BRT

BAT2

BAT1

SYS2

SYS1

DC2

DC1

EN3

PEN2

PEN1

36

35

34 33 32 31 30 29 28 27

26

25

EN1

PG1

LX1

PV1

OVP

CS

CC3

FB2

PV2

LX2

PG2

EN2

Pin Configurations

OUT1

0.98V TO V

IN

/ 1.2A

OUT2

0.98V TO V

IN

/ 0.9A

OUT3

30mA

WLED

DC SYS

OUT7

EN1

500mA

150mA

300mA

150mA

Li+
BATTERY

DC/USB

INPUT

TO SYSTEM
POWER

BAT

LX1

LX2

LX3

(MAX8662 ONLY)

OUT6

OUT5

OUT4

CS

TO SYS

EN2

EN3

EN4

EN5

EN6

EN7

PWR OK

CHARGE

STATUS

CHARGE

ENABLE

SL1

SL2

OUT4–OUT7

VOLTAGE

SELECT

MAX8662
MAX8663

POK

CHG

CEN

Typical Operating Circuit

Smart Power Selector is a trademark of Maxim Integrated
Products, Inc.

Pin Configurations continued at end of data sheet.

EVALUATION KIT

AVAILABLE

RANGE

+85°C

+85°C

6mm x 6mm x 0.8mm

5mm x 5mm x 0.8mm

MAX8662/MAX8663

Power-Management ICs for
Single-Cell, Li+ Battery-Operated Devices

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS (Input Limiter and Battery Charger)

(VDC= 5V, V

BAT

= 4V, V

CEN

= 0V, V

PEN_

= 5V, R

PSET

= 3kΩ, R

ISET

= 3.15kΩ, CCT= 0.068µF, TA= -40°C to +85°C, unless otherwise

noted.) (Note 1)

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.

LX3 to GND ............................................................-0.3V to +33V

DC_ to GND..............................................................-0.3V to +9V

BAT_ CEN, CHG, EN_, PEN_, POK, PV_, PWM,

SYS_, LX1, CS, LX2 to GND .................................-0.3V to +6V

VL to GND ................................................................-0.3V to +4V

BRT, CC3, FB_, IN45, IN67, OVP, REF,

SL_ to GND ...........................................-0.3V to (V

S

YS

+ 0.3V)

CT, ISET, PSET, THM to GND .....................-0.3V to (V

VL

+ 0.3V)

OUT4, OUT5 to GND................................-0.3V to (V

IN45

+ 0.3V)

OUT6, OUT7 to GND................................-0.3V to (V

IN67

+ 0.3V)

PG_ to GND...........................................................-0.3V to +0.3V

BAT1 + BAT2 Continuous Current ...........................................3A

SYS1 + SYS2 Continuous Current (2 pins) ..............................3A

LX_ Continuous Current ........................................................1.5A

Continuous Power Dissipation (T

A

= +70°C)

40-Pin 5mm x 5mm Thin QFN

(derate 35.7mW/°C above +70°C)

(multilayer board) .......................................................2857mW

48-Pin 6mm x 6mm Thin QFN
(derate 37mW/°C above +70°C) (multilayer board)...2963mW

Operating Temperature Range ..........................-40°C to +85°C

Junction Temperature Range ............................-40°C to +125°C

Storage Temperature Range .............................-65°C to +150°C

Lead Temperature (soldering, 10s) .................................+300°C

PARAMETER

CONDITIONS

UNITS

INPUT LIMITER

DC Operating Range V

DC

(Note 2)

V

V

DC_L

VDC rising, 500mV hysteresis

V

DC Overvoltage Threshold V

DC_H

VDC rising, 100mV hysteresis

V

I

SYS = IBAT =

0mA, V

CEN =

0V

DC Supply Current

I

SYS = IBAT =

0mA, V

CEN =

5V

mA

DC Shutdown Current

V

DC

= 5V, V

CEN =

5V, V

PEN1

= V

PEN2 =

0V (USB

suspend mode)

µA

DC-to-SYS Dropout
On-Resistance

V

DC

= 5V, I

SYS =

400mA, V

CEN =

5V

Ω

DC-to-BAT Dropout
Threshold

When V

SYS

regulation and charging stops, V

DC

falling, 150mV hysteresis

50 85

mV

VL Voltage V

VL

I

VL =

0 to 10mA

V

SYS Regulation Voltage

VDC = 5.8V, I

SYS =

1mA, V

CEN =

5V

V

R

PSET =

1.5kΩ

R

PSET

= 3kΩ

R

PSET

= 6kΩ

(500mA USB mode)

DC Input Current Limit I

DC_LIM

VDC = 5V, V

SYS

= 4.0V

V

PEN1

= V

PEN2 =

0V

(100mA USB mode)

90

mA

PSET Resistance Range R

PSET

Guaranteed by SYS current limit

kΩ

Inp ut Li m i ter S oft- S tar t Ti m e

Current-limit ramp time

ms

DC Undervoltage Threshold

SYMBOL

R

DC_SYS

V

DR_DC_BAT

V

SYS_REG

T

S S _ D C _S Y S

MIN TYP MAX

4.1 8.0

3.9 4.0 4.1

6.6 6.9 7.2

1.5

0.9

110 180

0.1 0.2

20

V

PEN1 =

V

PEN1 =

V

PEN1 =

V

PEN1 =

5V, V

5V, V

5V, V

0V, V

PEN2

PEN2 =

PEN2 =

PEN2 =

= 5V,

5V,

5V,

5V

3.1 3.3 3.5

5.2 5.3 5.4

1800 2000 2200

900 1000 1100

450 500 550

450 475 500

80

100

1.5 6.0

1.5

MAX8662/MAX8663

Power-Management ICs for

Single-Cell, Li+ Battery-Operated Devices

_______________________________________________________________________________________ 3

ELECTRICAL CHARACTERISTICS (Input Limiter and Battery Charger) (continued)

(VDC= 5V, V

BAT

= 4V, V

CEN

= 0V, V

PEN_

= 5V, R

PSET

= 3kΩ, R

ISET

= 3.15kΩ, CCT= 0.068µF, TA= -40°C to +85°C, unless otherwise

noted.) (Note 1)

PARAMETER

CONDITIONS

UNITS

BATTERY CHARGER

BAT-to-SYS On-Resistance

V

DC =

0V, V

BAT =

4.2V, I

SYS =

1A 40 80

mΩ

BAT-to-SYS Reverse
Regulation Voltage

V

D C

= 5V , V

P E N 1

= V

P E N 2

= 0V ( U S B 100m A m od e) ,

I

SYS

= 200mA (BAT to SYS voltage drop during SYS

overload)

mV

TA = +25°C

BAT Regulation Voltage

I

BAT =

0mA

T

A

= -40°C to +85°C

V

BAT Recharge Threshold BAT voltage drop to restart charging

mV

R

ISET =

1.89kΩ

R

ISET =

3.15kΩ

BAT Fast-Charge Current

I

SYS =

0mA,

R

PSET

= 1.5kΩ,

V

PEN1

= V

PEN2

= 5V

R

ISET =

7.87kΩ

mA

V

BAT =

2.5V, R

ISET =

3.15kΩ (prequalification

current is 10% of fast-charge current)

75

mA

ISET Resistance Range R

ISET

Guaranteed by BAT charging current
(1.5A to 300mA)

kΩ

V

ISET

-to-I

BAT

Ratio

R

ISET

= 3.15kΩ (ISET output voltage to actual

charge-current ratio)

2

V/A

Charger Soft-Start Time

Charge-current ramp time

ms

BAT Prequalification
Threshold

V

BAT

rising, 180mV hysteresis

V

VDC = 0V

5

BAT Leakage Current

V

BAT =

4.2V,

outputs disabled

V

DC = VCEN =

5V

5

µA

I

BAT

where CHG goes

high, and top-off timer;
I

BAT

falling (7.5% of

fast-charge current)

R

ISET =

3.15kΩ

mA

Timer-Suspend Threshold I

BAT

falling (Note 3)

mV

Timer Accuracy C

CT =

0.068µF

%

Prequalification Time

From CEN high to end of prequalification charge,
V

BAT =

2.5V, C

CT =

0.068µF

30

Min

Charge Time

From CEN high to end of fast charge,
C

CT =

0.068µF

Min

Top-Off Time

From CHG high to end of fast charge,
C

CT =

0.068µF

30

Min

Charger Thermal-Limit
Temperature

(Note 4)

°C

R

PSET

= 3kΩ 50

m A/°C

BAT Prequalification Current

CHG and Top-Off Threshold

Charger Thermal-Limit Gain

SYMBOL

R

BAT_REG

V

BAT_REG

t

SS_CHG

t

PREQUAL

t

FST-CHG

t

TOP-OFF

MIN TYP MAX

50 100 150

4.179 4.200 4.221

4.158 4.200 4.242

-140 -100 -60

1250

675 750 825

300

1.57 7.87

1.5

2.9 3.0 3.1

0.01

0.01

56.25

250 300 350

-20 +20

300

100

MAX8662/MAX8663

Power-Management ICs for
Single-Cell, Li+ Battery-Operated Devices

4 _______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS (Input Limiter and Battery Charger) (continued)

(VDC= 5V, V

BAT

= 4V, V

CEN

= 0V, V

PEN_

= 5V, R

PSET

= 3kΩ, R

ISET

= 3.15kΩ, CCT= 0.068µF, TA= -40°C to +85°C, unless otherwise

noted.) (Note 1)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

THERMISTOR INPUT (THM)

THM Internal Pullup
Resistance

10

kΩ

THM Resistance Threshold,
Hot

Resistance falling (1% hysteresis)

kΩ

THM Resistance Threshold,
Cold

Resistance rising (1% hysteresis)

kΩ

THM Resistance Threshold,
Disabled

Resistance falling

Ω

LOGIC I/O (POK, CHG, PEN_, EN_, PWM, CEN)

Input Logic-High Level

V

Input Logic-Low Level

V

V

LOGIC

= 0V to 5.5V, TA = +25°C

V

LOGIC

= 5.5V, TA = +85°C

µA

Logic Output-Voltage Low I

SINK

= 1mA 10

mV

TA = +25°C

1

Logic Output-High Leakage
Current

V

LOGIC =

5.5V
T

A

= +85°C

µA

ELECTRICAL CHARACTERISTICS (Output Regulator)

(V

SYS_

= V

PV_

= V

IN45

= V

IN67

= 4.0V, V

BRT

= 1.25V, circuit of Figure 1, TA= -40°C to +85°C, unless otherwise noted.) (Note 1)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

SYSTEM

SYS Operating Range V

SYS

V

V

SYS

rising, 100mV hysteresis

V

Extra supply current when at least one output is on 35

OUT1 on, V

PWM

= 0V 16

OUT2 on, V

PWM =

0V 16

µA

OUT3 on 1 2 mA

20

16

17

SYS Bias Current Additional
Regulator Supply Current

Not including
SYS bias current

OUT7 on (current in IN67) 16

µA

Inter nal Osci l l ator Fr eq uency PWM frequency of OUT1, OUT2, and OUT3

MHz

BUCK REGULATOR 1

V

PWM =

0V 16 35 µA

Supply Current

not including SYS
bias current

V

PWM =

5V

mA

Output Voltage Range V

OUT1

Guaranteed by FB accuracy

V

Maximum Output Current I

OUT1

mA

3.73 3.97 4.21

26.98 28.7 30.42

270 300 330

1.3

Logic Input-Leakage Current

-1 +0.001 +1

0.01

0.001

0.01

0.4

100

S Y S U nd er vol tag e Thr eshol d V

UVLO_SYS

OUT4 on (current into IN45)

I

+ I

, no load,

PV1

SYS

OUT5 on (current into IN45)

OUT6 on (current into IN67)

2.6 5.5

2.4 2.5 2.6

70

35

35

30

25

27

25

0.9 1.0 1.1

2.9

0.98 3.30

1200

MAX8662/MAX8663

Power-Management ICs for

Single-Cell, Li+ Battery-Operated Devices

_______________________________________________________________________________________ 5

ELECTRICAL CHARACTERISTICS (Output Regulator) (continued)

(V

SYS_

= V

PV_

= V

IN45

= V

IN67

= 4.0V, V

BRT

= 1.25V, circuit of Figure 1, TA= -40°C to +85°C, unless otherwise noted.) (Note 1)

PARAMETER

CONDITIONS

UNITS

FB Regulation Accuracy

From V

FB1

= 0.98V, I

OUT1 =

0 to 1200mA,

V

OUT1 =

0.98V to 3.3V

-3 +3 %

FB1 Input Leakage Current

µA

V

PV1 =

3.3V

pMOS On-Resistance I

LX1 =

100mA

V

PV1 =

2.6V

Ω

V

PV1 =

3.3V

nMOS On-Resistance I

LX1 =

100mA

V

PV1 =

2.6V

Ω

pMOS Current Limit

A

S ki p M od e Transi ti on C ur r ent 90

mA

nMOS Zero-Cross Current 25

mA

V

LX1

= V

PV1 =

5.5V

LX Leakage

V

EN1 =

0V, V

SYS

= 5.5V,

T

A =

+25°C

µA

BUCK REGULATOR 2

V

PWM

= 0V 16 35 µA

Supply Current

I

SYS

+ I

PV2

, no l oad , not

i ncl ud i ng S Y S b i as cur r ent

V

PWM

= 5V

mA

Output Voltage Range Guaranteed by FB accuracy

V

Maximum Output Current

mA

FB Regulation Accuracy

From V

FB2 =

0.98V, I

OUT2 =

0 to 600mA,

V

OUT2

= 0.98V to 3.3V

-3 +3 %

FB2 Input Leakage Current

µA

V

PV2 =

3.3V

pMOS On-Resistance I

LX2

= 100mA

V

PV2 =

2.6V

Ω

V

PV2 =

3.3V

nMOS On- Resistance I

LX2 =

100mA

V

PV2 =

2.6V

Ω

pMOS Current Limit

A

S ki p M od e Transi ti on C ur r ent 90

mA

nMOS Zero-Cross Current 25

mA

V

LX2

= V

PV2

= 5.5V

LX Leakage

V

EN2 =

0V, V

SYS

= 5.5V,

T

A =

+25°C

µA

BOOST REGULATOR FOR LED DRIVER

Supply Current

At S Y S , no l oad , not
i ncl ud i ng S Y S b i as cur r ent

Switching 1

mA

Output Range V

OUT3

30 V

Minimum Duty Cycle D

MIN

10 %

Maximum Duty Cycle D

MAX

92 %

CS Regulation Voltage V

CS

V

OVP Regulation Voltage Duty = 90%, I

LX3 =

0mA

V

OVP Sink Current

µA

OVP Soft-Start Period Time for I

OVP

to ramp from 0 to 20µA

ms

SYMBOL

V

LX1

V

LX2

= 0V, V

= 0V, V

= 5.5V -5.00 -0.01

PV1

= 5.5V -5.00 -0.01

PV2

MIN TYP MAX

0.01 0.10

0.12 0.24

0.15

0.2 0.4

0.3

1.4 1.8 2.2

0.01 1.00

2.1

0.98 3.30

900

0.01 0.10

0.2 0.4

0.3

0.2 0.4

0.3

1.07 1.30 1.55

0.01 1.00

V

SYS

90

0.29 0.32 0.35

1.225 1.250 1.275

19.2 20.0 20.8

1.25

ELECTRICAL CHARACTERISTICS (Output Regulator) (continued)

(V

SYS_

= V

PV_

= V

IN45

= V

IN67

= 4.0V, V

BRT

= 1.25V, circuit of Figure 1, TA= -40°C to +85°C, unless otherwise noted.) (Note 1)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

TA = +25°C

1

OVP Leakage Current

V

EN3

= 0V,

V

OVP

= V

SYS

= 5.5V

T

A =

+85°C

µA

nMOS On-Resistance I

LX3

= 100mA

1.2 Ω

TA = +25°C

V

LX3

= 30V

T

A =

+85°C

µA

nMOS Current Limit

mA

LED DRIVER

BRT Input Range V

BRT

I

CS =

0 to 30mA 0 1.5 V

REF Voltage V

REF

I

REF =

0mA

V

TA = +25°C -1

+1

BRT Input Current V

BRT

= 0 to 1.5V

T

A =

+85°C

µA

V

BRT

= 1.5V

30 32

CS Sink Current VCS = 0.2V

V

BRT

= 50mV

1.2

mA

CS Current-Source
Line Regulation

V

SYS

= 2.7V to 5.5V

%/V

PWM DIMMING

EN3 DC Turn-On Delay From V

EN3

= high to LED on

2.5 ms

EN3 Shutdown Delay From V

EN3

= low to LED off

2.5 ms

Maximum

ms

PWM Dimming Capture
Period

Time between rising edges
on EN3 for PWM dimming to
become active

Minimum 8 10 µs

PWM Dimming Pulse-Width
Resolution

Resolution of high or low-pulse width on EN3 for
dimming change

µs

LINEAR REGULATORS

V

IN45

5.5 V

IN45, IN67 Undervoltage
Threshold

V

IN45

rising, 100mV hysteresis

1.7 V

Output Noise f = 100Hz to 100kHz

µV

RMS

PSRR f = 100kHz 30 dB

Shutdown Supply Current V

EN4

= V

EN5

= 0V, TA = +25°C

1µA

Soft-Start Ramp Time V

OUT4

to 90% of final value 10

V/ms

Output Discharge
Resistance in Shutdown

V

EN4

= 0V

2.0 kΩ

LINEAR REGULATOR 4 (LDO4)

Supply Current At IN45, V

EN5

= 0V I

OUT4

= 0A 20 30 µA

Voltage Accuracy

I

OUT4

= 0 to 500mA,

V

IN45

= V

OUT4

+ 0.3V to 5.5V with 1.7V (min)

%

M i ni m um O utp ut C ap aci tor C

OUT4

Guaranteed stability, ESR < 0.05Ω

µF

Dropout Resistance IN45 to OUT4

0.4 Ω

Current Limit V

OUT4

= 0V

mA

MAX8662/MAX8663

Power-Management ICs for
Single-Cell, Li+ Battery-Operated Devices

6 _______________________________________________________________________________________

nMOS Off-Leakage Current

IN 45, IN 67 O p er ati ng Rang e

V

UVLO-IN45

0.01

0.1

0.6

0.01 5.00

0.1

500 620 900

1.45 1.50 1.55

-0.01

0.1

28

0.4 0.8

0.1

1.5 2.0

1.5 2.0

1.5 2.0

0.5

1.7

1.5 1.6

200

0.001

0.5 1.0

-1.5 +1.5

3.76

0.2

500 700

MAX8662/MAX8663

Power-Management ICs for

Single-Cell, Li+ Battery-Operated Devices

_______________________________________________________________________________________ 7

ELECTRICAL CHARACTERISTICS (OUTPUT REGULATOR) (continued)

(V

SYS_

= V

PV_

= V

IN45

= V

IN67

= 4.0V, V

BRT

= 1.25V, circuit of Figure 1, TA= -40°C to +85°C, unless otherwise noted.) (Note 1)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

LINEAR REGULATOR 5 (LDO5)

Supply Current At IN45, V

EN4

= 0V I

OUT5

= 0A

25 µA

Voltage Accuracy

I

OUT5 =

0 to 150mA,

V

IN45

= V

OUT5

+ 0.3V to 5.5V with 1.7V (min)

%

M i ni m um O utp ut C ap aci tor C

OUT5

Guaranteed stability, ESR < 0.05Ω

µF

Dropout Resistance IN45 to OUT5

Ω

Current Limit V

OUT5

= 0V

mA

LINEAR REGULATOR 6 (LDO6)

Supply Current At IN67, V

EN6

= V

SYS

, V

EN7

= 0V I

OUT6

= 0A

27 µA

Voltage Accuracy I

OUT6 =

0 to 300mA, V

IN67

= V

OUT6

+ 0.3V to 5.5V

%

M i ni m um O utp ut C ap aci tor C

OUT6

Guaranteed stability, ESR < 0.05Ω

µF

Dropout Resistance IN67 to OUT6

Ω

Current Limit V

OUT6

= 0V

mA

LINEAR REGULATOR 7 (LDO7)

Supply Current At IN67, V

EN6

= 0V, V

EN7

= V

SYS

I

OUT7

= 0A

25 µA

Voltage Accuracy

I

OUT7

= 0 to 150mA,

V

IN67

= V

OUT7

+ 0.3V to 5.5V with 1.7V (min)

%

M i ni m um O utp ut C ap aci tor C

OUT7

Guaranteed stability, ESR < 0.05Ω

µF

Dropout Resistance IN67 to OUT6

Ω

Current Limit V

OUT7

= 0V

mA

THERMAL SHUTDOWN

Thermal-Shutdown
Temperature

T

J

rising

°C

Thermal-Shutdown
Hysteresis

°C

Note 1: Limits are 100% production tested at TA= +25°C. Limits over the operating temperature range are guaranteed through

correlation using statistical quality control (SQC) methods.

Note 2: Input withstand voltage. Not designed to operate above V

DC

= 6.5V due to thermal-dissipation issues.

Note 3: ISET voltage when CT timer stops. Occurs only when in constant-current mode. Translates to 20% of fast-charge current.
Note 4: Temperature at which the input current limit begins to reduce.

16

-1.5 +1.5

0.8

0.6 1.2

150 210

17

-1.5 +1.5

1.76

0.35 0.60

300 420

16

-1.5 +1.5

0.8

0.6 1.2

150 210

165

15

MAX8662/MAX8663

Power-Management ICs for
Single-Cell, Li+ Battery-Operated Devices

8 _______________________________________________________________________________________

Typical Operating Characteristics

(Circuit of Figure 1, V

DC

= 5V, R

PSET

= 1.5kΩ, R

ISET

= 3kΩ, V

OUT1

= 3.3V, V

OUT2

= 1.3V, SL1 = SL2 = open, V

CEN

= 0V, V

PEN1

=

V

PEN2

= 5V, C

OUT1

= 2 x 10µF, C

OUT2

= 2 x 10µF, C

OUT3

= 0.1µF, C

OUT4

= 4.7µF, C

OUT5

= 1µF, C

OUT6

= 2.2µF, C

OUT7

= 1µF, CT =

0.068µF, C

REF

= CVL= 0.1µF, R

THM

= 10kΩ, L1 = 3.3µH, L2 = 4.7µH, L3 = 22µH, GND = PG1 = PG2 = PG3 = 0, TA= +25°C, unless

otherwise noted.)

INPUT QUIESCENT CURRENT

vs. INPUT VOLTAGE (CHARGER ENABLED)

MAX8662/63 toc01

INPUT VOLTAGE (V)

INPUT QUIESCENT CURRENT (mA)

7654321

0.2

0.4

0.6

0.8

1.0

1.2

1.4

0

08

V

BAT

= 4.2V

I

SYS

= 0
CHARGER IN
DONE MODE

V

BAT

RISING

V

BAT

FALLING

INPUT QUIESCENT CURRENT

vs. INPUT VOLTAGE (CHARGER DISABLED)

MAX8662/63 toc02

INPUT VOLTAGE (V)

INPUT QUIESCENT CURRENT (mA)

7654321

0.2

0.4

0.6

0.8

1.0

1.2

1.4

0

08

V

BAT

= 3.6V

V

BAT

RISING

V

BAT

FALLING

INPUT QUIESCENT CURRENT

vs. INPUT VOLTAGE (SUSPEND)

MAX8662/63 toc03

INPUT VOLTAGE (V)

INPUT QUIESCENT CURRENT (mA)

764 52 31

0.02

0.04

0.06

0.08

0.10

0.12

0.14

0.16

0.18

0.20

0

08

V

BAT

= 4.2V

I

SYS

= 0mA
PEN1 = PEN2 = 0
CEN = 1

BATTERY-LEAKAGE CURRENT

vs. BATTERY VOLTAGE

MAX8662/63 toc04

BATTERY VOLTAGE (V)

BATTERY-LEAKAGE CURRENT (μA)

4321

0.1

0.2

0.3

0.4

0.5

0

05

EN_ = 0, CEN = 1

V

DC

OPEN

V

DC

= 5V

BATTERY-LEAKAGE CURRENT

vs. TEMPERATURE (INPUT DISCONNECTED)

MAX8662/63 toc05

AMBIENT TEMPERATURE (°C)

BATTERY-LEAKAGE CURRENT (μA)

603510-15

0.3

0.5

0.4

0.6

0.7

0.8

0.2

-40 85

V

BAT

= 4.0V

EN_ = 0

BATTERY-REGULATION VOLTAGE

vs. TEMPERATURE

MAX8662/63 toc06

AMBIENT TEMPERATURE (°C)

BATTERY-REGULATION VOLTAGE (V)

603510-15

4.180

4.175

4.185

4.195

4.190

4.200

4.170

-40 85

EN_ = 0

CHARGE CURRENT

vs. BATTERY VOLTAGE (100mA USB)

MAX8662/63 toc07

BATTERY VOLTAGE (V)

CHARGE CURRENT (mA)

4321

10

20

30

40

50

60

70

80

90

100

0

05

VDC = 5V
R

ISET

= 3kΩ

PEN1 = PEN2 = 0

V

BAT

FALLING

V

BAT

RISING

CHARGE CURRENT

vs. BATTERY VOLTAGE (500mA USB)

MAX8662/63 toc08

BATTERY VOLTAGE (V)

CHARGE CURRENT (mA)

4.54.03.0 3.51.0 1.5 2.0 2.50.5

50

100

150

200

250

300

350

400

450

500

550

0

05.0

VDC = 5V
R

ISET

= 3k

Ω

PEN1 = 0
PEN2 = 1

V

BAT

FALLING

V

BAT

RISING

CHARGE CURRENT

vs. BATTERY VOLTAGE (AC ADAPTER)

MAX8662/63 toc09

BATTERY VOLTAGE (V)

CHARGE CURRENT (mA)

431 2

100

200

300

400

600

500

700

800

0

05

VDC = 5V
R

ISET

= 3k

Ω

PEN1 = PEN2 = 1

V

BAT

FALLING

V

BAT

RISING

MAX8662/MAX8663

Power-Management ICs for

Single-Cell, Li+ Battery-Operated Devices

_______________________________________________________________________________________

9

CHARGE CURRENT vs. AMBIENT TEMPERATURE

(LOW IC POWER DISSIPATION)

MAX8662/63 toc10

AMBIENT TEMPERATURE (°C)

CHARGE CURRENT (mA)

603510-15

100

200

300

400

500

600

700

800

900

0

-40 85

PEN1 = PEN2 = 1

PEN1 = PEN2 = 0

PEN1 = 0, PEN2 = 1

VDC = 5.0V, V

BAT

= 4.0V

R

ISET

= 3kΩ, CEN = 0, EN_ = 0

CHARGE CURRENT vs. AMBIENT TEMPERATURE

(HIGH IC POWER DISSIPATION)

MAX8662/63 toc11

AMBIENT TEMPERATURE (°C)

CHARGE CURRENT (mA)

603510-15

100

200

300

400

500

600

700

800

900

0

-40 85

PEN1 = PEN2 = 1

PEN1 = PEN2 = 0

PEN1 = 0, PEN2 = 1

VDC = 6.5V, V

BAT

= 3.1V

R

ISET

= 3kΩ, CEN = 0, EN_ = 0

SYS OUTPUT VOLTAGE

vs. INPUT VOLTAGE

MAX8662/63 toc12

INPUT VOLTAGE (V)

V

SYS

(V)

76

53412

3.8

4.2

4.0

4.6

4.4

5.2

5.0

4.8

5.4

5.6

3.6
08

V

BAT

= 4.0V

I

SYS

= 0mA
PEN1 = 0
PEN2 = 1

CHARGER
DISABLED

CHARGER

ENABLED

SYS OUTPUT VOLTAGE

vs. SYS OUTPUT CURRENT (DC DISCONNECTED)

MAX8662/63 toc13

I

SYS

(A)

V

SYS

(V)

2.52.01.51.00.5

3.8

4.0

4.2

4.4

4.6

4.8

5.0

5.2

5.4

5.6

3.6

03.0

V

BAT

= 4.0V

V

DC

= 0V

THE SLOPE OF THIS LINE SHOWS THAT THE
BAT-TO-SYS RESISTANCE IS 49mΩ.

SYS OUTPUT VOLTAGE

vs. SYS OUTPUT CURRENT (500mA USB)

MAX8662/63 toc14

I

SYS

(A)

V

SYS

(V)

2.52.01.51.00.5

3.8

4.0

4.2

4.4

4.6

4.8

5.0

5.2

5.4

5.6

3.6

03.0

VDC = 5.0V
V

BAT

= 4.0V
PEN1 = 0, PEN2 = 1
CEN = 1

SYS OUTPUT VOLTAGE

vs. SYS OUTPUT CURRENT (AC ADAPTER)

MAX8662/63 toc15

I

SYS

(A)

V

SYS

(V)

2.52.01.51.00.5

3.8

4.0

4.2

4.4

4.6

4.8

5.0

5.2

5.4

5.6

3.6

03.0

VDC = 5.0V
V

BAT

= 4.0V
PEN1 = PEN2 = 1
CEN = 1

USB CONNECT (I

SYS

= 0mA)

MAX8662/63 toc16

200μs/div

PEN1 = PEN2 = 0, CEN = 0,

V

BAT

= 4.0V, I

SYS

= 0mA, EN_ = 1

V

DC

I

IN

V

SYS

V

POK

V

CHG

I

BAT

0V

0V

0mA

0mA

4.0V
5V

4.4V

5V

+95mA

+95mA

5V/div

5V/div

5V/div

2V/div

200mA/div

200mA/div

NEGATIVE BATTERY
CURRENT FLOWS INTO
THE BATTERY
(CHARGING).

USB CONNECT (I

SYS

= 50mA)

MAX8662/63 toc17

200μs/div

PEN1 = PEN2 = 0, CEN = 0,

V

BAT

= 4.0V, I

SYS

= 50mA, EN_ = 1

V

DC

I

IN

V

SYS

V

POK

V

CHG

I

BAT

NEGATIVE BATTERY
CURRENT FLOWS
INTO THE BATTERY (CHARGING).

0V

0V

0V

0mA

50mA

4.0V

4.4V

5V/div

5V/div

5V/div

2V/div

200mA/div

200mA/div

5V

5V

+95mA

-45mA

Typical Operating Characteristics (continued)

(Circuit of Figure 1, V

DC

= 5V, R

PSET

= 1.5kΩ, R

ISET

= 3kΩ, V

OUT1

= 3.3V, V

OUT2

= 1.3V, SL1 = SL2 = open, V

CEN

= 0V, V

PEN1

=

V

PEN2

= 5V, C

OUT1

= 2 x 10µF, C

OUT2

= 2 x 10µF, C

OUT3

= 0.1µF, C

OUT4

= 4.7µF, C

OUT5

= 1µF, C

OUT6

= 2.2µF, C

OUT7

= 1µF, CT =

0.068µF, C

REF

= CVL= 0.1µF, R

THM

= 10kΩ, L1 = 3.3µH, L2 = 4.7µH, L3 = 22µH, GND = PG1 = PG2 = PG3 = 0, TA= +25°C, unless

otherwise noted.)

MAX8662/MAX8663

Power-Management ICs for
Single-Cell, Li+ Battery-Operated Devices

10 ______________________________________________________________________________________

AC ADAPTER CONNECT (I

SYS

= 500mA)

MAX8662/63 toc18

400μs/div

PEN1 = PEN2 = 1, CEN = 0,

V

BAT

= 4.0V, I

SYS

= 500mA, EN_ = 1

V

DC

I

IN

V

SYS

V

POK

V

CHG

I

BAT

NEGATIVE BATTERY CURRENT FLOWS
INTO THE BATTERY (CHARGING).

0V

0V

0mA

500mA

4.0V

4.4V

5V

5V/div

5V/div

5V/div

2V/div

1A/div

1A/div

5V

+1280mA

-780mA

USB DISCONNECTED (500mA USB)

MAX8662/63 toc19

200μs/div

PEN1 = 0, PEN2 = 1, CEN = 0,

V

BAT

= 4.0V, I

SYS

= 0mA

V

DC

I

IN

V

SYS

V

CHG

I

BAT

0V

0mA

4.4V

5V

5V/div

5V/div

500mA/div

500mA/div

1V/div

475mA

-475mA

CHARGER ENABLE (I

SYS

= 0mA)

MAX8662/63 toc20

200μs/div

PEN1 = 0, PEN2 = 1, V

BAT

= 4.0V, I

SYS

= 0mA, EN_ = 1

V

CEN

I

IN

V

SYS

V

CHG

I

BAT

2.8V

0V

0mA

0mA

5V

4.4V

0V

475mA

-475mA

5V/div

5V/div

500mA/div

2V/div

1A/div

OUT1 REGULATOR EFFICIENCY

vs. LOAD CURRENT

MAX8662/63 toc21

LOAD CURRENT (mA)

OUT1 REGULATOR EFFICIENCY (%)

1000100101

10

20

30

40

50

60

70

80

90

100

0

0.1 10,000

V

BAT

= 4.2V

V

BAT

= 3.6V

PWM = 0
PWM = 1

V

BAT

= 4.2V

V

BAT

= 3.6V

V

OUT1

= 3.3V

Typical Operating Characteristics (continued)

(Circuit of Figure 1, V

DC

= 5V, R

PSET

= 1.5kΩ, R

ISET

= 3kΩ, V

OUT1

= 3.3V, V

OUT2

= 1.3V, SL1 = SL2 = open, V

CEN

= 0V, V

PEN1

=

V

PEN2

= 5V, C

OUT1

= 2 x 10µF, C

OUT2

= 2 x 10µF, C

OUT3

= 0.1µF, C

OUT4

= 4.7µF, C

OUT5

= 1µF, C

OUT6

= 2.2µF, C

OUT7

= 1µF, CT =

0.068µF, C

REF

= CVL= 0.1µF, R

THM

= 10kΩ, L1 = 3.3µH, L2 = 4.7µH, L3 = 22µH, GND = PG1 = PG2 = PG3 = 0, TA= +25°C, unless

otherwise noted.)

OUT1 REGULATOR LINE REGULATION

MAX8662/63 toc23

V

SYS

(V)

OUTPUT VOLTAGE (V)

5.14.73.9 4.33.53.1

2.6

2.7

2.8

2.9

3.0

3.1

3.2

3.3

3.4

2.5

2.7 5.5

R

LOAD

= 330Ω

OUT1 VOLTAGE vs. TEMPERATURE

MAX8662/63 toc24

AMBIENT TEMPERATURE (°C)

OUTPUT VOLTAGE (V)

603510-15

3.294

3.298

3.302

3.306

3.310

3.290

-40 85

V

BAT

= 4.0V

R

LOAD

= 330Ω

OUT1 REGULATOR LOAD REGULATION

MAX8662/63 toc22

LOAD CURRENT (mA)

OUTPUT VOLTAGE (V)

1000100101

3.24

3.28

3.32

3.36

3.40

3.20

0.1 10,000

V

BAT

= 4.2V

V

BAT

= 3.6V

MAX8662/MAX8663

Power-Management ICs for

Single-Cell, Li+ Battery-Operated Devices

______________________________________________________________________________________

11

OUT1 REGULATOR LIGHT-LOAD

SWITCHING WAVEFORMS

MAX8662/63 toc25

20μs/div

V

OUT1

AC-COUPLED

V

LX

I

L

50mV/div

2V/div

200mA/div

V

BAT

= 4.0V

I

OUT1

= 10mA

PWM = 0

OUT1 REGULATOR HEAVY-LOAD

SWITCHING WAVEFORMS

MAX8662/63 toc26

1μs/div

V

OUT1

AC-COUPLED

V

LX

I

L

10mV/div

2V/div

500mA/div

V

BAT

= 4.2V

I

OUT1

= 1200mA

OUT1 REGULATOR LOAD-

TRANSIENT RESPONSE

MAX8662/63 toc27

40μs/div

V

OUT1

V

LX

I

OUT1

I

L

100mV/div

5V/div

1A/div

1A/div

V

BAT

= 4.0V

I

OUT1

= 10mA TO 1200mA TO 10mA

PWM = 0

OUT1 REGULATOR LINE-

TRANSIENT RESPONSE

MAX8662/63 toc28

100μs/div

V

OUT1

V

SYS

V

LX

I

L

200mA/div

5V/div

50mV/div

1V/div

I

OUT1

= 10mA

PWM = 0

5V

4V

OUT1 ENABLE AND DISABLE RESPONSE

MAX8662/63 toc29

1ms/div

V

OUT1

V

EN1

2V/div

2V/div

I

OUT1

= 10mA

Typical Operating Characteristics (continued)

(Circuit of Figure 1, V

DC

= 5V, R

PSET

= 1.5kΩ, R

ISET

= 3kΩ, V

OUT1

= 3.3V, V

OUT2

= 1.3V, SL1 = SL2 = open, V

CEN

= 0V, V

PEN1

=

V

PEN2

= 5V, C

OUT1

= 2 x 10µF, C

OUT2

= 2 x 10µF, C

OUT3

= 0.1µF, C

OUT4

= 4.7µF, C

OUT5

= 1µF, C

OUT6

= 2.2µF, C

OUT7

= 1µF, CT =

0.068µF, C

REF

= CVL= 0.1µF, R

THM

= 10kΩ, L1 = 3.3µH, L2 = 4.7µH, L3 = 22µH, GND = PG1 = PG2 = PG3 = 0, TA= +25°C, unless

otherwise noted.)

OUT2 REGULATOR EFFICIENCY

vs. LOAD CURRENT

MAX8662/63 toc30

LOAD CURRENT (mA)

OUT2 REGULATOR EFFICIENCY (%)

100101

10

20

30

40

50

60

70

80

90

100

0

0.1 1000

V

BAT

= 4.2V

V

BAT

= 4.2V

V

BAT

= 3.6V

V

BAT

= 3.6V

PWM = 0
PWM = 1

V

OUT1

= 3.3V

MAX8662/63 toc31

LOAD CURRENT (mA)

OUTPUT VOLTAGE (V)

1000100101

1.27

1.28

1.29

1.30

1.31

1.32

1.26

0.1 10,000

OUT2 REGULATOR LOAD REGULATION

V

BAT

= 3.6V

V

BAT

= 4.2V