參數(shù)資料
型號(hào): ISL9441
廠商: Intersil Corporation
英文描述: Triple, 180∑ Out-of-Phase, Step-Down PWM and Single Linear Controller
中文描述: 三,180Σ門(mén)診的階段,降壓型PWM和線性控制器單
文件頁(yè)數(shù): 8/20頁(yè)
文件大小: 978K
代理商: ISL9441
8
FN6383.1
December 5, 2007
PGOOD Rise Time
RPULLUP = 10k to 3.3V
0.05
μs
PGOOD Fall Time
RPULLUP = 10k to 3.3V
0.05
μs
EARLY WARNING FUNCTIONS
Undervoltage Lockout Rising (VCC_5V Pin)
4.25
4.45
4.50
V
Undervoltage Lockout Falling (VCC_5V Pin)
3.95
4.20
4.40
V
Early Warning Voltage Rising (VIN Pin; ISL9440, ISL9440A only)
5.75
5.90
V
Early Warning Voltage Falling (VIN Pin; ISL9440, ISL9440A only)
5.30
5.55
V
RST
RST Voltage Low
I_SINK = 4mA
0.4
V
RST Leakage Current
RST = 5V
0.025
1
μA
RST Rise Time
RPULLUP = 10k to 3.3V
0.05
μs
RST Fall Time
RPULLUP = 10k to 3.3V
0.05
μs
PGOOD/RST TIMING RISING
VIN/VOUT Rising Threshold to PGOOD High Rising
100
200
300
ms
PGOOD Rising to RST Rising
1.0
μs
PGOOD/RST TIMING FALLING
VIN/VOUT Falling Threshold to PGOOD Falling
40
70
100
μs
PGOOD Falling to RST Falling
4.5
5.5
6.5
μs
OVER VOLTAGE PROTECTION
OV Trip Point
118
%
OVER CURRENT PROTECTION
Overcurrent Threshold (OCSET_) (Note 5)
ROCSET = 55k
Ω
32
μA
Full Scale Input Current (ISEN_) (Note 5)
15
μA
Overcurrent Set Voltage (OCSET_)
1.70
1.75
1.80
V
OVER-TEMPERATURE
Over-Temperature Shutdown
150
°C
Over-Temperature Hysteresis
20
°C
NOTES:
2. In normal operation, where the device is supplied with voltage on the V
IN
pin, the VCC_5V pin provides a 5V output capable of 60mA (min).
When the VCC_5V pin is used as a 5V supply input, the internal LDO regulator is disabled and the V
IN
input pin must be connected to the
VCC_5V pin. (Refer to the
Pin Descriptions
section for more details.)
3. This is the total shutdown current with V
IN
= 5.6 and 24V.
4. Operating current is the supply current consumed when the device is active but not switching. It does not include gate drive current.
5. Limits established by characterization and are not production tested.
6. Check Note 2 for VCC_5V and VIN configurations at 5V ±10% input applications. ISL9440, ISL9440A’s PGOOD signal will fall LOW when VIN
pin voltage drops below 5.55V (TYP), which results from the early warning detection on VIN pin voltage. ISL9441 doesn’t have an early warning
function, so when VIN pin voltage is below 5.55V, PGOOD will not be pulled LOW; ISL9441’s PGOOD only shows the output voltage regulation
status.
Electrical Specifications
Recommended operating conditions unless otherwise noted. Refer to Block Diagram and Typical Application
Schematic. V
IN
= 5.6V to 24V, or VCC_5V = 5V ±10%, C_VCC_5V = 4.7μF, T
A
= -40°C to +85°C (Note 5),
Typical values are at T
A
= +25°C, unless otherwise specified.
(Continued)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
ISL9440, ISL9440A, ISL9441
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