參數(shù)資料
型號: ISL6721
廠商: Intersil Corporation
英文描述: Flexible Single Ended Current Mode PWM Controller(靈活的單端電流模式PWM控制器)
中文描述: 靈活的單端電流模式PWM控制器(靈活的單端電流模式的PWM控制器)
文件頁數(shù): 7/21頁
文件大?。?/td> 416K
代理商: ISL6721
7
FN9110.5
July 20, 2007
SOFT-START
Charging Current
SS = 2V
-40
-55
-70
μ
A
Charged Threshold Voltage
4.26
4.50
4.74
V
Initial Overcurrent Discharge Current
Sustained OC Threshold < SS <
Charged Threshold
30
40
55
μ
A
Overcurrent Shutdown Threshold Voltage
Charged Threshold minus,
T
A
= +25°C
0.095
0.125
0.155
V
Fault Discharge Current
SS = 2V
0.25
1.0
-
mA
Reset Threshold Voltage
T
A
= +25°C
0.22
0.27
0.31
V
SLOPE COMPENSATION
Charge Current
SLOPE = 2V, 0°C to +105°C
-40°C to +105°C
-45
-41
-53
-53
-65
-65
μ
A
Slope Compensation Gain
Fraction of slope voltage added to
I
SENSE
, T
A
= +25°C
0.097
-
0.103
V/V
Fraction of slope voltage added to
I
SENSE
(Note 3)
0.082
-
0.118
V/V
Discharge Voltage
V
RTCT
= 4.5V
-
0.1
0.2
V
GATE OUTPUT
Gate Output Limit Voltage
V
C
= 20V, C
GATE
= 1nF,
I
OUT
= 0mA
11.0
13.5
16.0
V
Gate VOH
V
C
- GATE, V
C
= 10V,
I
OUT
= 150mA
-
1.5
2.2
V
Gate VOL
GATE - PGND, IOUT = 150mA
IOUT = 10mA
-
1.2
0.6
1.5
0.8
V
Peak Output Current
V
C
= 20V, C
GATE
= 1nF (Note 5)
-
1.0
-
A
Output “Faulted” Leakage
V
C
= 20V, UV = 0V, GATE = 2V
1.2
2.6
-
mA
Rise Time
V
C
= 20V, C
GATE
= 1nF
1V < GATE < 9V
-
60
100
ns
Fall Time
V
C
= 20V, C
GATE
= 1nF
1V < GATE < 9V
-
15
40
ns
Minimum ON time
ISET = 0.5V; V
FB
= 0V; VC = 11V
ISENSE to GATE w/10:1 Divider
RTCT = 4.75V through 1k
Ω
(Note 5)
-
-
110
ns
OVERCURRENT PROTECTION
Minimum ISET Voltage
-
-
0.35
V
Maximum ISET Voltage
1.2
-
-
V
ISET Bias Current
V
ISET
= 1.00V
-1.0
-
1.0
μ
A
Restart Delay
T
A
= +25°C
150
295
445
ms
OV AND UV VOLTAGE MONITOR
Overvoltage Threshold
2.4
2.5
2.6
V
Undervoltage Fault Threshold
1.38
1.45
1.52
V
Undervoltage Clear Threshold
1.41
1.53
1.62
V
Electrical Specifications
Recommended operating conditions unless otherwise noted. Refer to Block Diagram and Typical Application
schematic on page 2 and page 3. 9V < V
CC
= V
C
< 20V, R
T
= 11k
Ω
, Ct = 330 pF, T
A
= -40 to +105°C (Note 3),
Typical values are at T
A
= +25°C
(Continued)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
ISL6721
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