ISL85402(2011) データシートの表示（PDF） - Intersil
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ISL85402
(Rev.:2011)
(Rev.:2011)
Intersil
ISL85402 Datasheet PDF : 18 Pages
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ISL85402
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. (Continued)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
MAX
(Note 6) TYP (Note 6) UNITS
POWER-GOOD MONITOR
Overvoltage Rising Trip Point
Overvoltage Rising Hysteresis
Undervoltage Falling Trip Point
Undervoltage Falling Hysteresis
PGOOD Rising Delay
PGOOD Leakage Current
PGOOD Low Voltage
OVERCURRENT PROTECTION
VFB/VREF
VFB/VOVTRIP
VFB/VREF
VFB/VUVTRIP
tPGOOD_DELAY
VPGOOD
Percentage of Reference Point
Percentage Below OV Trip Point
Percentage of Reference Point
Percentage Above UV Trip Point
fOSC = 500kHz
PGOOD HIGH, VPGOOD = 4.5V
PGOOD LOW, IPGOOD = 0.2mA
104 110 116 %
3
%
84
90
96
%
3
%
2
ms
10
nA
0.10
V
Default Cycle-by-Cycle Current Limit Threshold
Hiccup Current Limit Threshold
OVERVOLTAGE PROTECTION
IOC_1
IOC_2
ILIMIT = GND or VCC or Floating
Hiccup, IOC_2/IOC_1
3
3.6 4.2
A
115
%
OV Latching-off Trip Point
Percentage of Reference Point
LG = UG = LATCH LOW
120
%
OV Non-Latching-off Trip Point
Percentage of Reference Point
LG = UG = LOW
110
%
OV Non-Latching-off Release Point
Percentage of Reference Point
102.5
%
OVER-TEMPERATURE PROTECTION
Over-Temperature Trip Point
155
°C
Over-Temperature Recovery Threshold
140
°C
NOTE:
6. Parameters with MIN and/or MAX limits are 100% tested at +25°C, unless otherwise specified. Temperature limits established by characterization
and are not production tested.
Performance Curves
100
95
90
85
80
75
70
65
60
55
50
45
40
35
30
0.0
12V VIN
6V VIN
24V VIN
36V VIN
0.5
1.0
1.5
2.0
2.5
LOAD CURRENT (A)
FIGURE 3. EFFICIENCY, SYNCHRONOUS BUCK, FORCED PWM
MODE, 500kHz, VOUT 5V, TA = +25°C
100
95
90
85
80
75
70
65
60
55
50
0.1m
6V VIN
12V VIN
24V VIN
36V VIN
1m
10m
100m
LOAD CURRENT (A)
1.0 2.5
FIGURE 4. EFFICIENCY, SYNCHRONOUS BUCK, PFM MODE,
VOUT 5V, TA = +25°C
8
FN7640.0
September 29, 2011
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