Power Management. MAX8939A Datasheet


MAX8939A Management. Datasheet pdf. Equivalent


Part Number

MAX8939A

Description

System Power Management

Manufacture

Maxim Integrated

Total Page 30 Pages
Datasheet
Download MAX8939A Datasheet


MAX8939A
EVALUATION KIT AVAILABLE
MAX8939/MAX8939A/MAX8939B
System Power Management
for Mobile Handset
General Description
The MAX8939/MAX8939A/MAX8939B power manage-
ment ICs contain the necessary supplies and features for
supporting cell phone designs based on the Intel Mobile
Communications (IMC) 61XX 3G platform. Designed to power
all peripheral components in the platform, the ICs also provide
the necessary signals to control the 61XX baseband processor.
The integrated lithium-ion (Li+) charger is protected up
to 28V input and features a protected output voltage
for supply of a USB transceiver. Proprietary thermal-
regulation circuitry limits the die temperature during
fast-charging or when the ICs are exposed to high ambi-
ent temperatures, allowing maximum charging current
without damaging the ICs. A dedicated current regulator
is included for driving a charge indicator LED.
Four programmable low-noise, low-dropout linear regu-
lators (LDOs) provide the supply for noise sensitive
peripherals. A high power vibrator driver is I2C program-
mable in 70 PWM levels and 4 output voltages. The ICs
also offer two step-up converters; one high power, low
voltage (5V) to supply an external audio amplifier or
camera flash, and a high voltage (28V) supply for the
display and keyboard backlight. Two integrated 25mA
current regulators provide independent ramp-up and
ramp-down control, programmable through I2C.
The MAX8939/MAX8939A/MAX8939B are highly integrated
ICs that require very few external components and are avail-
able in a compact 2.5mm x 3.0mm, 0.65mm max height
wafer level package (WLP).
Applications
Companion Chip for Cell Phones/Smartphones
Features
S Step-Up Converter
700mA Guaranteed Output Current
I2C Programmable Output 3.5V to 5.0V in 16 Steps
Over 90% Efficiency
On-Chip FET and Synchronous Rectifier
Fixed 2MHz PWM Switching
Small 2.2µH to 10µH Inductor
S WLED Boost Converter
28V Max Step-Up Output Voltage
60mA Output Current
Integrated nMOS Power Switch
Over 90% Efficiency
Fixed 2MHz Switching
Small 4.7µH to 10µH Inductor
Two 25mA Individually Programmable Current
Regulators
I2C Programmable Output Current (50µA to
25.25mA) with 128-Step Pseudo Log Dimming
Individually Programmable Ramp (Up/Down)
Timers
Low Dropout (150mV max)
S Linear One-Cell Li+ Battery Charger
No External MOSFET, Reverse Blocking Diode,
or Current-Sense Resistor
Programmable Fast-Charge Current (1.5ARMS max
for the MAX8939 or 850mARMS max for the
MAX8939A/MAX8939B)
Programmable Top-Off Current Threshold
Proprietary Die Temperature Regulation Control
4.1V to 10V Input Voltage Range (MAX8939)
4.1V to 6.25V Input Voltage Range (MAX8939A/
MAX8939B) with Input Overvoltage Protection
Up to 28V Low-Dropout Voltage (300mV at
500mA) Input Power-Source Detection Output
Input Overvoltage Protected 4.75V Output
(SAFE_OUT) from IN
Charge Current Monitor Output
Indicator LED
Hardware Input Enable
5s Watchdog Feature During Charge
S Four Low-Noise LDOs
1x 400mA, 2 x 200mA and 1x 100mA Output
Current
High 65dB (typ) PSRR
Low Noise (45µVRMS typ)
1.7V to 3.2V Programmable Output Voltage
Low Quiescent Current (25µA typ)
400mA LDO with Hardware Enable Input
S Vibrator Driver
Guaranteed 200mA Output Current
Programmable Output Voltage 1.3V to VINVIB
Repetition Frequency 23.8kHz
PWM Speed Control in 70 steps
Active Stop Brake
S Control Interface for 61XX Baseband
MAX8939/MAX8939A/MAX8939B Control
Through I2C RESET_IN Reset Input
Charger Detect PWR_ON_CMP Output
IRQ Interrupt Output
S 2.9V to 5.5V Supply Voltage Range
S Thermal Shutdown
Ordering Information
PART
MAX8939EWV+T
TEMP RANGE
-40NC to +85NC
MAX8939AEWV+T -40NC to +85NC
MAX8939BEWV+T -40NC to +85NC
PIN-PACKAGE
30 WLP
(0.5mm pitch)
30 WLP
(0.5mm pitch)
30 WLP
(0.5mm pitch)
+Denotes a lead(Pb)-free/RoHS-compliant package.
T = Tape and reel.
Typical Operating Circuit appears at end of data sheet.
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.
19-5843; Rev 5; 12/12

MAX8939A
MAX8939/MAX8939A/MAX8939B
System Power Management
for Mobile Handset
ABSOLUTE MAXIMUM RATINGS
BATT, OUT1, SAFE_OUT, and INVIB to AGND.....-0.3V to +6.0V
CHG_IN, OUT2, LED1, and LED2 to AGND..........-0.3V to +30V
LED3 and CHG_MON to AGND..... -0.3V to (VSAFE_OUT + 0.3V)
COMP2, IRQ, RESET_IN, COMP1, SCL, SDA, CHG,
PWR_ON_CMP, REF, LDO1, LDO2, LDO3, LDO4,
and LDO1_EN to AGND..................... -0.3V to (VBATT + 0.3V)
OUTVIB to AGND................................... -0.3V to (VINVIB + 0.3V)
PGND1 and PGND2 to AGND..............................-0.3V to +0.3V
LX1, LX2 Current (Note 1).............................................. 1.7ARMS
Continuous Power Dissipation (TA = +70NC)
WLP (derate 24.4mW/NC above +70NC)..........................1.9W
Operating Temperature....................................... -40NC to +85NC
Junction Temperature......................................................+150NC
Storage Temperature Range............................. -65NC to +150NC
Soldering Temperature (reflow).......................................+260NC
Note 1: LX1 has internal clamp diodes to PGND1 and OUT1. LX2 has internal clamp diodes to PGND2 and OUT2. Applications
that forward bias these diodes should take care not to exceed the IC package power dissipation limit.
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.
PACKAGE THERMAL CHARACTERISTICS (Note 2)
WLP
Junction-to-Ambient Thermal Resistance (qJA)...........41°C/W
Note 2: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-lay-
er board. For detailed information on package thermal considerations, refer to www.maximintegrated.com/thermal-tutorial.
ELECTRICAL CHARACTERISTICS (Note 3)
(VBATT = 3.7V, VCHG_IN = 5.0V, circuit of Figure 1, TA = -40NC to +85NC, unless otherwise noted. Typical values are at TA = +25NC.)
PARAMETER
BATT
BATT Operating Voltage
BATT Shutdown Supply Current
BATT Standby Supply Current
BATT Biasing Supply Current
Undervoltage Lockout (UVLO)
Threshold
Undervoltage Lockout Hysteresis
THERMAL SHUTDOWN
Threshold
Hysteresis
REFERENCE
Reference Output Voltage
Reference Supply Rejection
LOGIC AND CONTROL INPUTS
Input Low Level
Input High Level
Logic-Input Current
CONDITIONS
All outputs off, I2C disabled,
TA = +25NC
VSCL = VSDA= VRESET_IN = 0V TA = +85NC
All outputs off, VSCL = VSDA =
VRESET_IN = 1.8V, I2C ready
TA = +25NC
TA = +85NC
I2C ready, one or more outputs on
BATT rising
SDA, SCL, LDO1_EN, CHG, and RESET_IN
SDA, SCL, LDO1_EN, CHG, and RESET_IN
SDA, SCL, LDO1_EN, CHG,
TA = +25NC
and RESET_IN, 0 < VIN < 5.5V TA = +85NC
MIN TYP MAX UNITS
2.9
0.4
0.4
5
5
60
2.6 2.75
100
5.5
1
1
10
2.9
V
FA
FA
FA
V
mV
+160
20
NC
NC
1.200
0.2
V
mV
0.4 V
1.40
V
-1
0.1
+1
FA
2   Maxim Integrated


Features EVALUATION KIT AVAILABLE MAX8939/MAX893 9A/MAX8939B System Power Management fo r Mobile Handset General Description T he MAX8939/MAX8939A/MAX8939B power mana gement ICs contain the necessary suppli es and features for supporting cell pho ne designs based on the Intel Mobile Co mmunications (IMC) 61XX 3G platform. De signed to power all peripheral componen ts in the platform, the ICs also provid e the necessary signals to control the 61XX baseband processor. The integrated lithium-ion (Li+) charger is protected up to 28V input and features a protect ed output voltage for supply of a USB t ransceiver. Proprietary thermalregulati on circuitry limits the die temperature during fast-charging or when the ICs a re exposed to high ambient temperatures , allowing maximum charging current wit hout damaging the ICs. A dedicated curr ent regulator is included for driving a charge indicator LED. Four programmabl e low-noise, low-dropout linear regulat ors (LDOs) provide the supply for noise sensitive peripherals. .
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