ISL8502 데이터 시트보기 (PDF) - Intersil
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ISL8502 Datasheet PDF : 19 Pages
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ISL8502
Electrical Specifications
PARAMETER
Refer to Block and Simplified Power System Diagrams and Typical Application Schematics. Operating
Conditions Unless Otherwise Noted: VIN = 12V, or VCC = 5V ±10%, TA = -40°C to +85°C. Typical are at
TA = +25°C. (Continued)
SYMBOL
TEST CONDITIONS
MIN
MAX
(Note 7) TYP (Note 7) UNITS
Negative Current Limit
Undervoltage Level
Thermal Shutdown Setpoint
Thermal Recovery Setpoint
INOC_peak
VFB/VREF
TSD
TSR
IOC from PHASE to PGND (Notes 5, 6)
(TA = 0°C to +85°C)
IOC from PHASE to PGND (Notes 5, 6)
(TA = -40°C to +85°C)
2.2
3.0
3.5
A
1.9
2.8
3.7
A
76
80
84
%
150
°C
130
°C
Typical Performance Curves
100
VIN = 12V, VOUT = 2.5V, IO = 2A, fs = 500kHz, L = 4.7µH, CIN = 20µF, COUT = 100µF + 22µF,
TA = +25° C, unless otherwise noted.
100
90
90
80
VOUT = 2.5V
70
VOUT = 1.8V
VOUT = 3.3V
60
50
80
70
VOUT = 5.0V
VOUT = 3.3V
VOUT = 2.5V
60
VOUT = 1.8V
50
40
0.0
0.5
1.0
1.5
2.0
2.5
OUTPUT LOAD (A)
FIGURE 3. EFFICIENCY vs LOAD (VIN = 5V)
40
0.0
0.5
1.0
1.5
2.0
2.5
OUTPUT LOAD (A)
FIGURE 4. EFFICIENCY vs LOAD (VIN = 12V)
0.6026
0.6025
0.6024
0.6023
0.6022
14VIN
0.6021
9VIN
0.6020
5VIN
0.6019
0
1
2
OUTPUT LOAD (A)
FIGURE 5. VOUT REGULATION vs LOAD (VOUT = 0.6V, 500kHz)
1.206
1.205
14VIN
1.204
1.203
9VIN
1.202
1.201
5VIN
1.200
0
1
2
OUTPUT LOAD (A)
FIGURE 6. VOUT REGULATION vs LOAD (VOUT = 1.2V, 500kHz)
7
FN6389.2
June 29, 2010
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