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)壓器的三路輸出調節(jié)器)
文件頁數(shù): 4/12頁
文件大?。?/td> 320K
代理商: ISL6455A
4
FN9196.0
December 21, 2005
Absolute Maximum Ratings
(Note 1)
Thermal Information
Supply Voltage V
IN
, PV
CC
, V
IN
_LDO. . . . . . . .GND -0.3V to +6.0V
Max Continuous Output Current . . . . . . . . . . . . . . . . . . . . . . 600mA
Operating Conditions
Temperature Range. . . . . . . . . . . . . . . . . . . . . . . . . . .-40°C to 85°C
Thermal Resistance (Typical)
24 Ld QFN (Note 1) . . . . . . . . . . . . . . .
Maximum Junction Temperature (Plastic Package) .-55°C to 150°C
Maximum Storage Temperature Range. . . . . . . . . . .-65°C to 150°C
Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . .300°C
(Lead Tips Only)
θ
JA
(°C/W)
42
θ
JC
(°C/W)
6
CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the
device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
NOTE:
1.
θ
JA
is measured in free air with the component mounted on a high effective thermal conductivity test board with “direct attach” features. See
Tech Brief TB379.
2. For
θ
JC
, the “case temp” location is the center of the exposed metal pad on the package underside.
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.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
V
CC
SUPPLY
VIN_PWM Supply Voltage Range
ISL6455
3.0
3.3
3.6
V
ISL6455A
4.2
5.0
5.5
V
VIN_LDO Supply Voltage Range
3.0
-
5.5
V
Operating Supply Current (Note 3) for ISL6455
V
IN
= V
IN
_LDO = PV
CC
= 3.3V
f
SW
= 750kHz, C
OUT
= 10
μ
F
,
I
L
= 0mA
-
2.5
3.1
mA
Operating Supply Current (Note 3) for ISL6455A
V
IN
= V
IN
_LDO = PV
CC
= 5.0V
f
SW
= 750kHz, C
OUT
= 10
μ
F
,
I
L
= 0mA
-
3.5
4.5
mA
Shutdown Supply Current
ISL6455 and ISL6455A
EN = EN_LDO = GND
-
5
10
μ
A
Input Bias Current (EN pin)
EN = EN_LDO = GND/V
IN
-1.5
1.0
1.5
μ
A
VIN_PWM UVLO Threshold for ISL6455
V
TR
2.55
2.65
2.71
V
V
TF
2.51
2.56
2.61
V
VIN_PWM UVLO Threshold for ISL6455A
V
TR
3.94
4.05
4.13
V
V
TF
3.78
3.89
3.97
V
VIN_LDO UVLO Threshold for ISL6455 and
ISL6455A
V
TR
2.46
2.64
2.82
V
V
TF
2.53
2.59
2.66
V
Thermal Shutdown Temperature (Note 6)
Rising Threshold
-
150
-
°C
Thermal Shutdown Hysteresis (Note 6)
-
20
-
°C
SYNCHRONOUS BUCK PWM REGULATOR
Output Voltage
ISL6455
0.8
-
2.5
V
ISL6455A
0.8
-
3.3
V
FB_PWM Initial Voltage Accuracy (Note 7)
V
REF
= 0.45V, I
OUT
= 3mA, T
A
= -40°C to 85°C
-0.9
-
0.9
%
FB_PWM Line Regulation
I
O
= 3mA, V
IN
= PV
CC
= 3.0-3.6V (ISL6455)
or 4.2-5.5V (6455A)
-0.5
-
0.5
%
FB_PWM Load Regulation
I
O
= 3mA to 500mA, V
IN
= PV
CC
= 3.0-3.6V (ISL6455)
or 4.2-5.5V (ISL6455A)
-1.1
-
+1.1
%
Peak Output Current Limit
700mA
-
1300
mA
PMOS r
DS(ON)
I
OUT
= 200mA
-
170
-
m
NMOS r
DS(ON)
I
OUT
= 200mA
-
50
-
m
ISL6455, ISL6455A
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