ISL85402(2011) View Datasheet(PDF) - Intersil
Part Name
Description
Manufacturer
ISL85402
(Rev.:2011)
(Rev.:2011)
Intersil
ISL85402 Datasheet PDF : 18 Pages
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ISL85402
Absolute Maximum Ratings
VIN, PHASE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GND - 0.3V to +44V
VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GND - 0.3V to +6.0V
AUXVCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GND - 0.3V to +22V
Absolute Boot Voltage, VBOOT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +50.0V
Upper Driver Supply Voltage, VBOOT - VPHASE. . . . . . . . . . . . . . . . . . . +6.0V
All Other Pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . GND - 0.3V to VCC + 0.3V
ESD Rating
Human Body Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2000V
Machine Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200V
Charged Device Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1000V
Latchup Rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100mA
Thermal Information
Thermal Resistance
θJA (°C/W) θJC (°C/W)
ISL85402 QFN 4x4 Package (Notes 4, 5). . . . . .
40
3.5
Maximum Junction Temperature (Plastic Package) . . . . . . . . . . . . . . +150°C
Maximum 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
Supply Voltage on VIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3V to 36V
AUXVCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GND - 0.3V to +20V
Ambient Temperature Range (Industrial). . . . . . . . . . . . . . . . . . -40°C to +85°C
Junction Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . .-40°C to +125°C
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:
4. θJA 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.
5. For θJC, the “case temp” location is the center of the exposed metal pad on the package underside.
Electrical Specifications Refer to “Block Diagram” on page 4 and “Typical Application Schematics” on page 5. Operating
Conditions Unless Otherwise Noted: VIN = 12V, or VCC = 4.5V ±10%, TA = -40°C to +85°C. Typical are at TA = +25°C. Boldface limits apply over
the operating temperature range, -40°C to +85°C.
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
MAX
(Note 6) TYP (Note 6) UNITS
VIN PIN SUPPLY
VIN Pin Voltage Range
VIN Pin
3.05
36
V
VIN Pin connected to VCC
3.05
5.5
V
Operating Supply Current
IQ
MODE = VCC/FLOATING (PFM), no load at the
300
µA
output
MODE = GND (Forced PWM), VIN = 12V,
Non-switching
1.2
mA
Standby Supply Current
INTERNAL MAIN LINEAR REGULATOR
MAIN LDO VCC Voltage
MAIN LDO Dropout Voltage
VCC Current Limit of MAIN LDO
INTERNAL AUXILIARY LINEAR REGULATOR
IQ_SBY
EN connected to GND, VIN = 12V
VCC
VDROPOUT_MAIN
VIN > 5V
VIN = 4.2V, IVCC = 35mA
VIN = 3V, IVCC = 25mA
1.8
3
µA
4.2 4.5 4.8
V
0.3 0.5
V
0.25 0.3
V
60
mA
AUXVCC Input Voltage Range
AUX LDO VCC Voltage
LDO Dropout Voltage
Current Limit of AUX LDO
VAUXVCC
VCC
VDROPOUT_AUX
VAUXVCC > 5V
VAUXVCC = 4.2V, IVCC = 35mA
VAUXVCC = 3V, IVCC = 25mA
3
20
V
4.2 4.5 4.8
V
0.3 0.5
V
0.25 0.3
V
60
mA
AUX LDO Switch-over Rising Threshold
VAUXVCC_RISE AUXVCC voltage rise; Switch to Auxiliary LDO
3
3.1 3.2
V
AUX LDO Switch-over Falling Threshold Voltage VAUXVCC_FALL AUXVCC voltage fall; Switch back to main BIAS 2.73 2.87 2.97 V
LDO
AUX LDO Switch-over Hysteresis
VAUXVCC_HYS AUXVCC Switch-over Hysteresis
0.2
V
6
FN7640.0
September 29, 2011
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