2024年4月11日发(作者：原语蕊)
19-0782; Rev 1; 6/08
LED Light Management IC in
2.5mm x 2.5mm UCSP
General DescriptionFeatures
The MAX8830 light management IC integrates a 400mA
(guaranteed) PWM DC-DC step-up converter, a 320mA
♦Step-Up DC-DC Converter
white LED camera flash current sink, and four program-
400mA Guaranteed Output Current
mable LED current sinks. The internal 1MHz step-up
Over 90% Efficiency
converter features an internal switching MOSFET and
On-Chip FET and Synchronous Rectifier
synchronous rectifier to improve efficiency and minimize
Fixed 1MHz PWM Switching
external component count. The camera flash output cur-
Small 2.2µH to 10µH Inductor
rent and maximum timer is programmable through I
2
C.
I
2
C-Programmable V
OUT
(3.8V to 5.2V and Off in
Each LED current is individually regulated to a program-
16 Steps)
mable level (from off to 10mA in 32 steps) and is com-
pletely independent of each other.
♦Flash LED Current Sink
I
2
C-Programmable Flash Output Current(Off to
An I
2
C interface controls individual on/off of all outputs,
step-up output voltage setting, movie/flash current,
320mA in 32 Steps)
flash timer duration settings, and individual LED current
I
2
C-Programmable Flash Maximum Timer (0.5s,
sink settings.
1.0s, 1.5s, or 2.0s)
I
2
C-Programmable Movie Output Current (Off to
The MAX8830 is available in a 16-bump UCSP™ pack-
160mA in 16 Steps)
age (2.5mm x 2.5mm).
Movie Enabled by I
2
C or Logic Input
Applications
Flash Enabled by Logic Input
Cell Phones and Smartphones
Low Dropout (75mV typ)
PDAs and MP3 Players
♦Four LED Current Sinks
Individually I
2
C-Programmable Output Current
Typical Operating Circuit
Off to 10mA in 32 Steps
Low LED Sink Current Dropout Voltage (30mV typ)
2.2μH TO
10μH
♦I
2
C Interface
PROGRAMMABLE
OUTPUT
Write Address (0x94), Read Address (0x95)
INPUT
3.8V TO 5.2V
Individual On/Off and LED Current Settings
2.7V TO 5.5V
LX
UP TO 400mA*
Simple Register Mapping
IN
OUT
C
IN
C
♦< 1µA Shutdown Current
GND
OUT
♦Open/Short LED Detection
PGND
♦Thermal-Shutdown Protection
♦16-Bump, 2.5mm x 2.5mm UCSP Package
MAX8830
COMP
320mA FLASH
FLED
MOVIE ON
MVON
Ordering Information
FLASH ON
FLEN
LED1
PART
TEMP
RANGE
PIN-PACKAGE
SCL
IC
LED2
-40°C to
SDA
MAX8830EWE+T
+85°C
16 UCSP (2.5mm x 2.5mm)
V
LOGIC
V
LED3
DD
+
Denotes a lead-free package.
LED4
Pin Configuration appears at the end of data sheet.
*GUARANTEED OUTPUT CURRENT FOR EXTERNAL CIRCUITRY IS 400mA
MINUS THE SUM OF ALL LED CURRENTS.
UCSP is a trademark of Maxim Integrated Products, Inc.
________________________________________________________________
Maxim Integrated Products
1
For pricing, delivery, and ordering information,please contact Maxim Directat 1-888-629-4642,
or visit Maxim’s website at .
/
MAX8830
LED Light Management IC in
2.5mm x 2.5mm UCSP
M
A
X
8
8
3
0
ABSOLUTE MAXIMUM RATINGS
IN, OUT to GND………………………....…………..-0.3V to +6.0V
IN, OUT to GND (maximum of 1µs)....................................+7.0V
V
DD
-0.3V to +4.0V
SCL, SDA, MVON, FLEN -0.3V to V
DD
+ 0.3V
COMP, FLED, LED_ .-0.3V to V
OUT
+ 0.3V
PGND -0.3V to +0.3V
Continuous I
LX
1A
RMS
Continuous Power Dissipation (T
A
= +70°C)
16-Bump 2.5mm x 2.5mm UCSP
(derate 105.7mW/°C above +70°C).............................750mW
Operating -40°C to +85°C
+150°C
Storage -65°C to +150°C
Bump Temperature* (soldering)......................................+235°C
*This device is constructed using a unique set of packaging techniques that impose a limit on the thermal profile the device can be
exposed to during board level solder attach and rework. This limit permits only the use of the solder profiles recommended in the
industry-standard specification, JEDEC 020A, paragraph 7.6, Table 3 for IR/VPR and Convection reflow. Preheating is required.
Hand or wave soldering is not allowed.
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.
ELECTRICAL CHARACTERISTICS
(V
IN
= 3.6V, V
GND
= V
PGND
= 0V, V
DD
= 3.0V, T
A
= -40°C to +85°C,unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 1)
PARAMETER
IN Operating Voltage
V
DD
Operating Range
V
DD
Undervoltage Lockout (UVLO) Threshold
V
DD
UVLO Hysteresis
IN UVLO Threshold
IN UVLO Hysteresis
V
DD
Standby Supply Current
IN Standby Supply Current
IN Shutdown Supply Current
Thermal-Shutdown Hysteresis
Thermal-Shutdown
LOGIC AND I
2
C INTERFACE
MVON, FLEN
Logic Input-High VoltageV
DD
= 1.7V to 3.6V
SCL, SDA
MVON, FLEN
Logic Input-Low VoltageV
DD
= 1.7V to 3.6V
SCL, SDA
T
A
= +25°C
T
A
= +85°C
-10.01
0.1
0.03
1.3
0.6
1.3
0.1
0.2
0.4
400
t
BUF
t
HD_STA
t
LOW
1.6
0.7 x
V
DD
0.4
0.3 x
V
DD
+1
V
V
SCL = SDA = V
DD
,
I
2
C ready
SCL = SDA = V
DD
,
I
2
C ready
All outputs off,
V
DD
= 0
T
A
= +25°C
T
A
= +85°C
T
A
= +25°C
T
A
= +85°C
T
A
= +25°C
T
A
= +85°C
V
IN
rising2.25
V
DD
falling
DESCRIPTIONMIN
2.7
1.7
1.351.5
50
2.45
50
3
4
5
5
0.1
1
20
+160
5
15
10
2.65
TYPMAX
5.5
3.6
1.65
UNITS
V
V
V
mV
V
mV
µA
µA
µA
°C
°C
Logic Input Current
SDA Output Low Voltage
I
2
C Clock Frequency
Bus-Free Time Between START and STOP
Hold Time Repeated START Condition
SCL Low Period
V 0V or V 3.6V
I L
=
I H
=
I
SDA
= 3mA
µA
V
kHz
µs
µs
µs
2_______________________________________________________________________________________
/
2024年4月11日发(作者：原语蕊)
19-0782; Rev 1; 6/08
LED Light Management IC in
2.5mm x 2.5mm UCSP
General DescriptionFeatures
The MAX8830 light management IC integrates a 400mA
(guaranteed) PWM DC-DC step-up converter, a 320mA
♦Step-Up DC-DC Converter
white LED camera flash current sink, and four program-
400mA Guaranteed Output Current
mable LED current sinks. The internal 1MHz step-up
Over 90% Efficiency
converter features an internal switching MOSFET and
On-Chip FET and Synchronous Rectifier
synchronous rectifier to improve efficiency and minimize
Fixed 1MHz PWM Switching
external component count. The camera flash output cur-
Small 2.2µH to 10µH Inductor
rent and maximum timer is programmable through I
2
C.
I
2
C-Programmable V
OUT
(3.8V to 5.2V and Off in
Each LED current is individually regulated to a program-
16 Steps)
mable level (from off to 10mA in 32 steps) and is com-
pletely independent of each other.
♦Flash LED Current Sink
I
2
C-Programmable Flash Output Current(Off to
An I
2
C interface controls individual on/off of all outputs,
step-up output voltage setting, movie/flash current,
320mA in 32 Steps)
flash timer duration settings, and individual LED current
I
2
C-Programmable Flash Maximum Timer (0.5s,
sink settings.
1.0s, 1.5s, or 2.0s)
I
2
C-Programmable Movie Output Current (Off to
The MAX8830 is available in a 16-bump UCSP™ pack-
160mA in 16 Steps)
age (2.5mm x 2.5mm).
Movie Enabled by I
2
C or Logic Input
Applications
Flash Enabled by Logic Input
Cell Phones and Smartphones
Low Dropout (75mV typ)
PDAs and MP3 Players
♦Four LED Current Sinks
Individually I
2
C-Programmable Output Current
Typical Operating Circuit
Off to 10mA in 32 Steps
Low LED Sink Current Dropout Voltage (30mV typ)
2.2μH TO
10μH
♦I
2
C Interface
PROGRAMMABLE
OUTPUT
Write Address (0x94), Read Address (0x95)
INPUT
3.8V TO 5.2V
Individual On/Off and LED Current Settings
2.7V TO 5.5V
LX
UP TO 400mA*
Simple Register Mapping
IN
OUT
C
IN
C
♦< 1µA Shutdown Current
GND
OUT
♦Open/Short LED Detection
PGND
♦Thermal-Shutdown Protection
♦16-Bump, 2.5mm x 2.5mm UCSP Package
MAX8830
COMP
320mA FLASH
FLED
MOVIE ON
MVON
Ordering Information
FLASH ON
FLEN
LED1
PART
TEMP
RANGE
PIN-PACKAGE
SCL
IC
LED2
-40°C to
SDA
MAX8830EWE+T
+85°C
16 UCSP (2.5mm x 2.5mm)
V
LOGIC
V
LED3
DD
+
Denotes a lead-free package.
LED4
Pin Configuration appears at the end of data sheet.
*GUARANTEED OUTPUT CURRENT FOR EXTERNAL CIRCUITRY IS 400mA
MINUS THE SUM OF ALL LED CURRENTS.
UCSP is a trademark of Maxim Integrated Products, Inc.
________________________________________________________________
Maxim Integrated Products
1
For pricing, delivery, and ordering information,please contact Maxim Directat 1-888-629-4642,
or visit Maxim’s website at .
/
MAX8830
LED Light Management IC in
2.5mm x 2.5mm UCSP
M
A
X
8
8
3
0
ABSOLUTE MAXIMUM RATINGS
IN, OUT to GND………………………....…………..-0.3V to +6.0V
IN, OUT to GND (maximum of 1µs)....................................+7.0V
V
DD
-0.3V to +4.0V
SCL, SDA, MVON, FLEN -0.3V to V
DD
+ 0.3V
COMP, FLED, LED_ .-0.3V to V
OUT
+ 0.3V
PGND -0.3V to +0.3V
Continuous I
LX
1A
RMS
Continuous Power Dissipation (T
A
= +70°C)
16-Bump 2.5mm x 2.5mm UCSP
(derate 105.7mW/°C above +70°C).............................750mW
Operating -40°C to +85°C
+150°C
Storage -65°C to +150°C
Bump Temperature* (soldering)......................................+235°C
*This device is constructed using a unique set of packaging techniques that impose a limit on the thermal profile the device can be
exposed to during board level solder attach and rework. This limit permits only the use of the solder profiles recommended in the
industry-standard specification, JEDEC 020A, paragraph 7.6, Table 3 for IR/VPR and Convection reflow. Preheating is required.
Hand or wave soldering is not allowed.
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.
ELECTRICAL CHARACTERISTICS
(V
IN
= 3.6V, V
GND
= V
PGND
= 0V, V
DD
= 3.0V, T
A
= -40°C to +85°C,unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 1)
PARAMETER
IN Operating Voltage
V
DD
Operating Range
V
DD
Undervoltage Lockout (UVLO) Threshold
V
DD
UVLO Hysteresis
IN UVLO Threshold
IN UVLO Hysteresis
V
DD
Standby Supply Current
IN Standby Supply Current
IN Shutdown Supply Current
Thermal-Shutdown Hysteresis
Thermal-Shutdown
LOGIC AND I
2
C INTERFACE
MVON, FLEN
Logic Input-High VoltageV
DD
= 1.7V to 3.6V
SCL, SDA
MVON, FLEN
Logic Input-Low VoltageV
DD
= 1.7V to 3.6V
SCL, SDA
T
A
= +25°C
T
A
= +85°C
-10.01
0.1
0.03
1.3
0.6
1.3
0.1
0.2
0.4
400
t
BUF
t
HD_STA
t
LOW
1.6
0.7 x
V
DD
0.4
0.3 x
V
DD
+1
V
V
SCL = SDA = V
DD
,
I
2
C ready
SCL = SDA = V
DD
,
I
2
C ready
All outputs off,
V
DD
= 0
T
A
= +25°C
T
A
= +85°C
T
A
= +25°C
T
A
= +85°C
T
A
= +25°C
T
A
= +85°C
V
IN
rising2.25
V
DD
falling
DESCRIPTIONMIN
2.7
1.7
1.351.5
50
2.45
50
3
4
5
5
0.1
1
20
+160
5
15
10
2.65
TYPMAX
5.5
3.6
1.65
UNITS
V
V
V
mV
V
mV
µA
µA
µA
°C
°C
Logic Input Current
SDA Output Low Voltage
I
2
C Clock Frequency
Bus-Free Time Between START and STOP
Hold Time Repeated START Condition
SCL Low Period
V 0V or V 3.6V
I L
=
I H
=
I
SDA
= 3mA
µA
V
kHz
µs
µs
µs
2_______________________________________________________________________________________
/