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參數(shù)資料
| 型號： | SC1109 |
| 廠商： | Semtech Corporation |
| 元件分類： | 基準電壓源/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)： | 3/17頁 |
| 文件大?。?/td> | 223K |
| 代理商： | SC1109 |
SYNCHRONOUS PWM CONTROLLER WITH
DUAL LOW DROPOUT REGULATOR
CONTROLLERS
2000 SEMTECH CORP.
PRELIMINARY - October 16, 2000
SC1109
3
TEL:805-498-2111 FAX:805-498-3804 WEB:http://www.semtech.com
ELECTRICAL CHARACTERISTICS (Cont.)
Unless specified: VOSENSE
= V
O
; Vcc=4.75V to 5.25V; STBY=4.75V to 5.25V; BST = 11.4V to 12.6V; T
A
= 0 to 70°C
PARAMETER
SYM
CONDITIONS
Internal Drivers
Peak DH Source Current
Isource
DH
BST-DH = 4.5V
Peak DH Sink Current
Isink
DH
DH-GND = 3.1V
DH-GND = 1.5V
Peak DL Source Current
Isource
DL
VCC-DL = 4.5V
Peak DL Sink Current
Isink
DL
DL-GND = 3.1V
DL-GND = 1.5V
Dead time
T
DEAD
Linear Sections
Standby Voltage
V
STBY
Standby Quiescent current
I
STDBYQ
VSTBY = 5V, SS/EN = 0V
Tracking Difference
(4)
Delta
TRACK
Output Voltage LDO1
V
LDO1
I
O
= 0 to 4A, 3.3V Vin = 3.3V
Output Voltage LDO2
V
LDO2
I
O
= 0 to 4A, 3.3V Vin = 3.3V
Load Regulation
LOAD
REG
I
O
= 0 to 4A, 3.3V Vin = 3.3V
Line Regulation
LINE
REG
3.3V Vin = 3.13V to 3.47V, I
o
LDOS(1,2) Output Impedance
Z
OUT
V
GATE(1,2)
= 6.5V
LDOS(1,2) Input Impedance
Z
IN
Gain (A
OL
)
(3)
GAIN
LDO
LDOS (1,2) to GATE (1,2)
LDO1 Gate Voltage
Vgate
LDO1
V
STDBY
= 5V
LDO2 Gate Voltage
Vgate
LDO2
V
STDBY
= 5V
MIN
TYP
MAX
UNITS
500
500
100
500
500
100
40
mA
mA
mA
mA
mA
mA
ns
100
4.4
5
5.25
5
V
mA
mV
V
V
%
%
k
k
dB
V
V
200
1.782 1.818 1.854
2.475 2.525 2.575
0.3
0.3
1
10
50
8
7
1.5
Notes:
(1) All electrical characteristics are for the application circuit on page 6.
(2) Soft start function is performed after Vcc is above the UVLO and SS/EN is above 600mV. The Soft start
capacitor is then charged at a 10uA constant current until SS/EN is charged to above 1V.
(3) Guaranteed by design
(4) Tracking Difference is defined as the delta between 3.3V Vin and the LDO1, LDO2 output voltages during the
linear ramp up until regulation is achieved.
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