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參數(shù)資料
| 型號： | SC1172 |
| 廠商： | Semtech Corporation |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | Cap-Free, NMOS, 150mA Low Dropout Regulator with Reverse Current Protection |
| 中文描述： | 無電容，NMOS管，150mA的低壓差穩(wěn)壓器的反向電流保護 |
| 文件頁數(shù)： | 2/12頁 |
| 文件大?。?/td> | 119K |
| 代理商： | SC1172 |
PROGRAMMABLE SYNCHRONOUS DC/DC
CONVERTER WITH LOW DROPOUT
REGULATOR CONTROLLER
SC1172/3
1999 SEMTECH CORP.
October 25, 1999
652 MITCHELL ROAD NEWBURY PARK CA 91320
2
ELECTRICAL CHARACTERISTICS
Unless specified: V
CC
= 4.75V to 5.25V; GND = P
GND
= 0V; V
OSENSE
= V
O
; 0mV < (CSp-CSm) < 60mV; LDOV = 11.4V to 12.6V; T
A
= 25
o
C
PARAMETER
CONDITIONS
Switching Section
Output Voltage
I
O
= 2A
Supply Voltage
V
CC
Supply Current
V
CC
= 5.0
Load Regulation
I
O
= 0.8A to 15A
Line Regulation
Minimum operating voltage
Current Limit Voltage
Oscillator Frequency
Oscillator Max Duty Cycle
DH Sink/Source Current
BSTH-DH
= 4.5V, DH-PGNDH = 2V
DL Sink/Source Current
BSTL-DL
= 4.5V, DL-PGNDL = 2V
Output Voltage Tempco
Gain (A
OL
)
V
OSENSE
to V
O
OVP threshold voltage
OVP source current
V
OVP
= 3.0V
Power good threshold voltage
Dead time
Linear Section
Quiescent current
LDOV = 12V
Output Voltage (SC1172)
Reference Voltage (SC1173)
Feedback Pin Bias Current (SC1173)
Gain (A
OL
)
LDOS to GATE
Load Regulation
I
O
= 0 to 8A
(2)
Line Regulation
Output Impedance
MIN
TYP
MAX
UNITS
See Note 1.
4.2
7
15
V
8
1
mA
%
%
V
mV
kHz
%
A
A
ppm/
o
C
dB
%
mA
%
ns
0.5
4.2
80
220
60
180
90
1
1
70
200
95
30
35
120
100
10
88
50
112
100
5
mA
V
V
uA
dB
%
%
1.485 1.500 1.515
1.252 1.265 1.278
10
90
0.3
0.3
200
Parameter
V
CC
to GND
PGND to GND
BST to GND
Operating Temperature Range
Junction Temperature Range
Storage Temperature Range
Lead Temperature (Soldering) 10 seconds
Thermal Impedance Junction to Ambient
Thermal Impedance Junction to Case
Symbol
V
IN
Maximum
-0.3 to +7
± 1
-0.3 to +15
0 to +70
0 to +125
-65 to +150
300
80
25
Units
V
V
V
°C
°C
°C
°C
°
C/W
°
C/W
T
A
T
J
T
STG
T
L
θ
JA
θ
JC
ABSOLUTE MAXIMUM RATINGS
Notes:
(1) See Output Voltage table
(2) In application circuit
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