ISL8501 Просмотр технического описания (PDF) - Intersil
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ISL8501 Datasheet PDF : 19 Pages
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ISL8501
Absolute Maximum Ratings (Note 1)
VIN to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +26V
VIN_LDOx to GND. . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +6V
BOOT to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +33V
PHASE to BOOT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -6V to +0.3V
VCC to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +6V
VOUT, LDO1, LDO2 to GND . . . . . . . . . . . . . . . . . . . . . -0.3V to +6V
FB_PWM, FB_LDOx to GND. . . . . . . . . . . . . . . . . . . . . -0.3V to +6V
PG_PWM, PG_LDOx to GND . . . . . . . . . . . . . . . . . . . . -0.3V to +6V
EN, EN_LDOx to GND. . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +6V
CC1, CC2 to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +6V
VCC Output Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50mA
Thermal Information
Thermal Resistance
θJA (°C/W) θJC (°C/W)
QFN Package (Notes 1, 2). . . . . . . . . .
36
5
Maximum Junction Temperature (Plastic Package) . . . . . . . +150°C
Maximum Storage Temperature Range . . . . . . . . . .-65°C to +150°C
Junction Temperature Range. . . . . . . . . . . . . . . . . .-55°C to +150°C
Storage Temperature Range . . . . . . . . . . . . . . . . . .-65°C to +150°C
Operating Temperature Range . . . . . . . . . . . . . . . . .-40°C to +85°C
Pb-free reflow profile . . . . . . . . . . . . . . . . . . . . . . . . . .see link below
http://www.intersil.com/pbfree/Pb-FreeReflow.asp
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.
*An accidental short between VCC and GND may cause excessive heating and permanent damage to the device.
NOTES:
1. 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 for details.
2. For θJC, the “case temp” location is the center of the exposed metal pad on the package underside. See Tech Brief TB379 for details.
Electrical Specifications
PARAMETER
Unless Otherwise Noted, All Parameter Limits are Guaranteed Over the Recommended Operating Conditions
and the Typical Specifications are Measured at the Following Conditions: TA = -40°C To +85°C (Note 7),
VIN = 6V to 25V, Unless Otherwise Noted. Typical Values are at TA = +25°C.
SYMBOL
TEST CONDITIONS
MIN TYP MAX UNITS
SUPPLY VOLTAGE
VIN Voltage Range
VIN
6
25
V
VIN connected to VCC
4.5
5.0
5.5
V
VIN_LDOx Voltage Range
(Note 6)
1.8
4.6
V
VIN Operating Supply Current
VIN Shutdown Supply Current
POWER-ON RESET
IOP (Note 3)
ISD EN = EN_LDOx = GND
2.5
3.5
mA
70 100 μA
VCC POR Threshold
Rising Edge
4.25 4.40 4.50
V
Hysteresis
260
mV
VIN_LDOx POR Threshold
Rising Edge
1.2
V
Hysteresis
200
mV
INTERNAL VCC LDO
VCC Output Voltage Range
REFERENCE
VIN = 6V to 25V, IVCC = 0mA to 50mA
4.5 5.00 5.5
V
Reference Voltage
STANDARD BUCK PWM REGULATOR
VFB VIN = 6V to 25V, IREF = 0
0.590 0.6 0.609 V
FB_PWM Line Regulation
IOUT = 0mA, VIN = 6V to 25V
-0.5
0.5
%
FB_PWM Leakage Current
VFB = 0.6V
0
50 100 nA
OSCILLATOR AND PWM MODULATOR
Nominal Switching Frequency
Modulator Gain
Peak-to-Peak Sawtooth Amplitude
PWM Ramp Offset Voltage
Maximum Duty Cycle
ERROR AMPLIFIER
fSW
AMOD
VRAMP
VOFFSET
DCMAX
TA = -40°C to +85°C, VCC = 5V
VIN = 12V (AMOD = 10/VIN)
VIN = 12V (VPP = VIN/10)
COMP >4V
450 500 550 kHz
0.73 0.86 0.99 V/V
1.2
V
0.70 0.8 0.91
V
80
83
%
Open-Loop Gain
88
dB
Gain Bandwidth Product
GBWP
15
MHz
Slew Rate
SR COMP = 10pF
5
V/μs
5
FN6500.1
July 12, 2007
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