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ISL97901
4
FN7824.0
May 24, 2011
CONFIDENTIAL
PRELIMINARY
RELEASE UNDER NDA
IN REVIEW
Absolute Maximum Ratings Thermal Information
Supply Voltage Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 6.5V
Maximum Voltage on C
BYPASS
Pin. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2.9V
Voltage on V
OUT
Pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0V to V
CC
Voltage on All Other Pins . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to V
CC
+ 0.3V
Maximum Output Current (ISL97901) . . . . . . . . . . . . . . . . . . . . . . . . . . .1.8A
ESD Rating
Human Body Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2kV
Machine Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200V
Latch Up. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100mA
Thermal Resistance (Typical) θ
JA
(°C/W) θ
JC
(°C/W)
4x5 QFN Package (Notes 3, 4) . . . . . . . . . . TBD TBD
Maximum Junction Temperature (Plastic Package) . . . . . . . . . . . .+150°C
Storage Temperature Range. . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C
Pb-Free Reflow Profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . see link below
http://www.intersil.com/pbfree/Pb-FreeReflow.asp
Recommended Operating Conditions
Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40°C to +85°C
Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.7V to 5.5V
CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact product
reliability and result in failures not covered by warranty.
NOTES:
3. θ
JA
is measured in free air with the component mounted on a high effective thermal conductivity test board with “direct attach” features. See Tech
Brief TB379
4. For θ
JC
, the “case temp” location is the center of the exposed metal pad on the package underside.
Electrical Specifications V
VIN
= V
PVIN
= V
EN
= 3.6V, T
A
= +25°C to +85°C. Boldface limits apply over the operating temperature range,
-40°C to +85°C.
SYMBOL PARAMETER TEST CONDITIONS
MIN
(Note 5)
TYP
(Note 6)
MAX
(Note 5) UNITS
POWER-ON RESET
V
POR_R
Rising VIN Threshold 2.2 2.4 2.6 V
V
POR_F
Falling VIN Threshold Falling from threshold 2.1 2.3 2.5 V
SUPPLY CURRENT
I
SHUTDOWN
VIN Supply Current 1 No Load; CEN = low 0.5 8 µA
I
STANDBY
VIN Supply Current 2 No Load; CEN = Hi; ENx = low 50 µA
I
RUN_OPN
VIN Supply Current 3 PWM; No Load, Optical Loop Open 1 mA
I
RUN_CL
VIN Supply Current 4 PWM; No Load, Optical Loop Close 18 mA
OUTPUT CONTROL
V
OUT
Output Voltage Range V
IN
= 3.7V; I
OUT
= 1000mA 2.2 5.0 V
I
OUT
Output Current Accuracy V
IN
= 3.7V; I
OUT
= 500mA -2.5 2.5 %
V
CLAMP
Output Voltage Clamp EN1 = EN2 = EN3 = EN4 = ow;
Reg ‘Voltage D0’ set to max
5.2 5.5 5.8 V
V
BLK
Output Voltage During Transition Actual voltage determine by Reg. "Voltage D0" with
EN[1..4] signals are low.
2.5 5.0 V
t
SS
Output Voltage Soft-start Time Initial power-up 1 ms
t
SS
Output Voltage Soft-start Time During load transition (no ATE test). Programmable TBD TBD µs
G
LED
LED Current Programming Gain IGLED = ILED/(LFBP-LFBN)
ILED = 1000mA
0.72 0.77 mA/mV
DC/DC SWITCHING SPECIFICATIONS
F
SW
Switching Frequency 2.25 2.50 2.75 MHz
I
LX_LEAK
LX Leakage Current -1 1 µA
POWER MOSFET
R
DSON_N
N-Channel MOSFET ON-Resistance V
IN
= 3.7V 0.04 0.06 Ω
R
DSON_P
P-Channel MOSFET ON-Resistance V
IN
= 3.7V 0.10 0.15 Ω