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參數(shù)資料
| 型號： | ISL6455A |
| 廠商： | Intersil Corporation |
| 英文描述： | Triple Output Regulator with Single Synchronous Buck and Dual LDO(帶單同步降壓和雙LDO的三路輸出調(diào)節(jié)器) |
| 中文描述： | 三單和雙同步降壓穩(wěn)壓器LDO輸出（帶單同步降壓和雙穩(wěn)壓器的三路輸出調(diào)節(jié)器） |
| 文件頁數(shù)： | 5/12頁 |
| 文件大?。?/td> | 320K |
| 代理商： | ISL6455A |
5
FN9196.0
December 21, 2005
Efficiency
I
OUT
= 200mA, V
IN
= 3.3V, V
OUT
= 1.8V
-
93
-
%
Soft-Start Time
4096 Clock Cycles @ 750kHz
-
5.5
-
ms
OSCILLATOR
Oscillator Frequency
T
A
= -40°C to +85°C
620
750
880
kHz
Frequency Synchronization Range (f
SYNC
)
Clock signal on SYNC pin
500
-
1000
kHz
SYNC High Level Input Voltage
As % of V
IN
70
-
-
%
SYNC Low Level Input Voltage
As % of V
IN
-
-
30
%
Sync Input Leakage Current
SYNC = GND or V
IN
-1.0
-
1.0
μ
A
Min Duty Cycle of External Clock Signal (Note 6)
-
20
-
%
Max Duty Cycle of External Clock Signal (Note 6)
-
80
-
%
PG_PWM
Rising Threshold
1.2mA source/sink, FB_PWM vs 0.45V V
REF
+5.5
8.0
+10.5
%
Falling Threshold
FB_PWM vs 0.45V V
REF
-10.5
-8.0
-5.5
%
Leakage Current
PG_PWM = GND or V
IN
-
0.01
0.1
μ
A
LDO1 SPECIFICATIONS
Output Voltage Range
VIN_VLDO > 3.0V
1.2
-
2.7
V
Output Voltage Range
VIN_VLDO > 3.6V
1.2
-
3.3
V
FB_LDO1 Voltage Accuracy (Note 7)
I
OUT
= 10mA
-1.5
-
1.5
%
Maximum Output Current (Note 6)
V
IN
= 3.6V
300
-
-
mA
Output Current Limit (Note 6)
350
420
600
mA
Dropout Voltage (Note 4)
I
OUT
= 300mA
-
150
300
mV
FB_LDO1 Line Regulation
I
OUT
= 10mA, VIN_LDO = 3.0-5.5V
-0.5
-
0.5
%/V
FB_LDO1 Load Regulation
I
OUT
= 10mA to 300mA
-0.5
-
0.5
%
Output Voltage Noise (Note 6)
10Hz < f < 100kHz, I
OUT
= 10mA
C
OUT
= 2.2
μ
F
-
65
-
μ
V
RMS
C
OUT
= 10
μ
F
-
60
-
μ
V
RMS
LDO2 SPECIFICATIONS
Output Voltage Range
VIN_VLDO > 3.0V
1.2
-
2.7
V
Output Voltage Range
VIN_VLDO > 3.6V
1.2
-
3.3
V
FB_LDO2 Voltage Accuracy (Note 7)
I
OUT
= 10mA
-1.5
-
1.5
%
Maximum Output Current (Note 6)
V
IN
= 3.6V
300
-
-
mA
Output Current Limit (Note 6)
350
420
600
mA
Dropout Voltage (Note 4)
I
OUT
= 300mA
-
150
300
mV
FB_LDO2 Line Regulation
I
OUT
= 10mA, VIN_LDO = 3.0-5.5V
-0.5
-
0.5
%/V
FB_LDO2 Load Regulation
I
OUT
= 10mA to 300mA
-0.5
-
0.5
%
Output Voltage Noise (Note 6)
10Hz < f < 100kHz, I
OUT
= 10mA
C
OUT
= 2.2
μ
F
-
30
-
μ
V
RMS
C
OUT
= 10
μ
F
-
20
-
μ
V
RMS
Electrical Specifications
Recommended operating conditions unless otherwise noted. V
IN
= V
IN
_LDO = PV
CC
= 3.3V for ISL6455 and
5.0V for the ISL6455A, Compensation Capacitors = 33nF for LDO1 and LDO2. T
A
= -40°C to 85° (Note 2), typical
values are at T
A
= 25°C.
(Continued)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
ISL6455, ISL6455A
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