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參數資料
| 型號： | LTPC |
| 廠商： | Linear Technology Corporation |
| 英文描述： | 100mA REGULATED CHARGE-PUMP INVERTERS IN THINSOT |
| 中文描述： | 100mA的穩(wěn)壓電荷泵采用ThinSOT逆變器中 |
| 文件頁數： | 1/12頁 |
| 文件大小： | 188K |
| 代理商： | LTPC |
LTC1983-3/LTC1983-5
100mA Regulated
Charge-Pump Inverters
1
sn1983 1983fs
The LTC
1983-3 and LTC1983-5 are inverting charge
pump DC/DC converters that produce negative regulated
outputs. The parts require only three tiny external capaci-
tors and can provide up to 100mA of output current. The
devices can operate in open loop mode (creating a –V
IN
supply) or regulated output mode depending on the input
supply voltage and the output current.
The LTC1983-3/LTC1983-5 have many useful features for
portable applications including very low quiescent current
(25
μ
A typical) and a zero current shutdown mode pro-
grammed through the SHDN pin.
The LTC1983-3/LTC1983-5 are over-temperature and
short-circuit protected. The parts are available in a 6-pin
low profile (1mm) ThinSOT package.
I
–3V Generation in Single-Supply Systems
I
Portable Equipment
I
LCD Bias Supplies
I
GaAs FET Bias Supplies
I
Fixed Output Voltages: –3V, –5V or Low Noise V
IN
to –V
IN
Inverted Output
I
±
4% Output Voltage Accuracy
I
Low Quiesient Current: 25
μ
A
I
100mA Output Current Capability
I
3V to 5.5V Operating Voltage Range (LTC1983-3)
I
2.3V to 5.5V Operating Voltage Range (LTC1983-5)
I
Internal 900kHz Oscillator
I
“Zero Current” Shutdown
I
Short-Circuit and Over-Temperature Protected
I
Low Profile (1mm) ThinSOT
TM
Package
in ThinSOT
, LTC and LT are registered trademarks of Linear Technology Corporation.
ThinSOT is a trademark of Linear Technology Corporation.
V
IN
SHDN
C
+
V
OUT
GND
C
–
LTC1983-3
V
IN
3V TO 5.5V
V
OUT
= –3V
I
OUT
= UP TO 100mA
C
OUT
10
F
C
IN
10
μ
F
C
FLY
1
F
OFF ON
C
FLY
: TAIYO YUDEN LMK212BJ105
C
IN
, C
OUT
: TAIYO YUDEN JMK316BJ106ML
1983-3 TA01
V
OUT
vs I
OUT
I
OUT
(mA)
0
V
O
–3.3
–3.2
–3.1
–3.0
–2.9
–2.8
–2.7
20
40
60
80
1983 TA02
100
V
IN
= 5V
V
IN
= 3.3V
DESCRIPTIOU
FEATURES
APPLICATIU
TYPICAL APPLICATIO
U
–3V at 100mA DC/DC Converter
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