MAX6948B MAXIM [Maxim Integrated Products], MAX6948B Datasheet - Page 2

• Manufacturer Part Number: MAX6948B
• Description: High-Efficiency PWM LED Driver with Boost Converter and Five Constant-Current GPIO Ports
• Manufacturer: MAXIM [Maxim Integrated Products]

High-Efficiency PWM LED Driver with Boost
Converter and Five Constant-Current GPIO Ports
ABSOLUTE MAXIMUM RATINGS
V+ to GND ...............................................................-0.3V to +6V
V
PGND to GND ......................................................-0.3V to +0.3V
LX to PGND (Note 1) .............................................-0.3V to +30V
Current into LX (Note 1) ...................................................700mA
OUT, LEDSW to PGND (Note 1) ...........................-0.3V to +30V
P0–P4 to GND .........................................................-0.3V to +6V
RST, SDA, SCL, AD0 to GND .................. -0.3V to (V
FB to PGND (Note 1) ............................................-0.3V to +0.3V
I.C. to GND ...........................................................-0.3V to +0.3V
DC Current on P0–P4 .........................................................50mA
DC Current on SDA ............................................................10mA
Total GND Current ............................................................150mA
Total PGND Current .........................................................150mA
Note 1: LX, FB, LEDSW pins have an internal clamp diode to PGND. Applications that forward bias these diodes should take care
Note 2: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a
Note 3: Refer to the Pb-free solder reflow requirement in J-STD -020, Rev D.1.
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional opera-
tion 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
(Typical Application Circuit, V+ = 2.7V to 5.0V, V
V+ = 3.3V, V
2
Operating Supply Voltage (V+)
Operating Supply Voltage (V
Output Load External Supply
Voltage
Port External Supply Voltage
Port Voltage (P0, P4)
Power-On-Reset Voltage
Standby Current
Standby Current in Reset
(Interface Active)
DD
, COMP to GND ....................................-0.3V to (V+ + 0.3V)
not to exceed the power dissipation limits of the device.
single-layer board. For detailed information on package thermal considerations, refer to
tutorial.
PARAMETER
DD
= 2.5V, T
A
= +25NC.) (Note 4)
DD
)
SYMBOL
V
V
V
I
V
V
STBY
I
PORT
V+
RST
OUT
POR
EXT
DD
DD
Boost-converter output
P0–P4 at high impedance
Constant-current on
Voltage rising
Standby mode,
boost converter off,
RST = V
tal inputs at V
GND
Standby mode,
RST = GND,
f
other digital inputs
at V
SCL
DD
= 1.7V to V+, T
DD
= 400kHz, all
+ 0.3V)
or GND
DD
, all digi-
DD
CONDITIONS
or
A
Continuous Power Dissipation (T
Junction-to-Ambient Thermal Resistance (B
Operating Temperature Range
Junction Temperature .....................................................+150NC
Storage Temperature Range ............................ -65NC to +150NC
ESD Protection
Lead Temperature (soldering, 10s)
= T
25-Bump WLP (derate 10.8mW/NC above +70NC) ......866mW
25-Bump WLP ..............................................................93NC/W
(T
Human Body Model (R
25-Bump WLP ............................................................. (Note 3)
T
T
T
T
MIN
P0–P4, OUT, LEDSW, FB to GND ................................Q8kV
All Other Pins ................................................................Q2kV
A
A
A
A
MIN
= +25NC
= T
= +25NC
= T
to T
to T
MIN
MIN
MAX
MAX
to T
to T
) .............................................. -40NC to +105NC
, unless otherwise noted. Typical values are at
MAX
MAX
D
= 1.5kI, C
MIN
2.7
1.7
www.maxim-ic.com/thermal-
A
= +70NC)
TYP
3.3
2.5
1.7
1.5
1.6
S
= 100pF)
JA
) (Note 2)
MAX
5.0
5.5
V+
V+
28
4
6
4
6
UNITS
FA
FA
V
V
V
V
V
V