LTC1983-3 반도체 회로 부품 판매점
(LTC1983-3/-5) 100mA REGULATED CHARGE-PUMP INVERTERS
|
|
 Linear Technology |
www.DataSheet4U.com
LTC1983-3/LTC1983-5
100mA Regulated
Charge-Pump Inverters
in ThinSOT
FEATURES
s Fixed Output Voltages: –3V, –5V or Low Noise VIN
to –VIN Inverted Output
s ±4% Output Voltage Accuracy
s Low Quiesient Current: 25µA
s 100mA Output Current Capability
s 3V to 5.5V Operating Voltage Range (LTC1983-3)
s 2.3V to 5.5V Operating Voltage Range (LTC1983-5)
s Internal 900kHz Oscillator
s “Zero Current” Shutdown
s Short-Circuit and Over-Temperature Protected
s Low Profile (1mm) ThinSOTTM Package
U
APPLICATIO S
s –3V Generation in Single-Supply Systems
s Portable Equipment
s LCD Bias Supplies
s GaAs FET Bias Supplies
DESCRIPTIO
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 –VIN
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
(25µA 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.
, LTC and LT are registered trademarks of Linear Technology Corporation.
ThinSOT is a trademark of Linear Technology Corporation.
TYPICAL APPLICATIO
–3V at 100mA DC/DC Converter
VIN
3V TO 5.5V
CIN
10µF
OFF ON
VIN VOUT
LTC1983-3
SHDN GND
C+ C–
VOUT = –3V
IOUT = UP TO 100mA
COUT
10µF
CFLY
1µF
1983-3 TA01
CFLY: TAIYO YUDEN LMK212BJ105
CIN, COUT: TAIYO YUDEN JMK316BJ106ML
–3.3
–3.2
–3.1
–3.0
–2.9
–2.8
–2.7
0
VOUT vs IOUT
VIN = 5V
VIN = 3.3V
20 40 60 80 100
IOUT (mA)
1983 TA02
sn1983 1983fs
1
LTC1983-3/LTC1983-5
ABSOLUTE AXIwww.DataSheet4U.com U RATI GS
(Note 1)
VIN to GND ................................................... –0.3V to 6V
SHDN Voltage .............................................. –0.3V to 6V
VOUT to GND (LTC1983-3) .................. 0.2V to VOUT Max
VOUT to GND (LTC1983-5) .................. 0.2V to VOUT Max
IOUT Max ............................................................. 125mA
Output Short-Circuit Duration .......................... Indefinite
Operating Temperature Range (Note 2) ...–40°C to 85°C
Storage Temperature Range ................. – 65°C to 125°C
Lead Temperature (Soldering, 10 sec).................. 300°C
UW U
PACKAGE/ORDER I FOR ATIO
TOP VIEW
VCC 1
VOUT 2
C+ 3
6 SHDN
5 GND
4 C–
S6 PACKAGE
6-LEAD PLASTIC SOT-23
TJMAX = 125°C, θJA = 256°C/W
ORDER PART
NUMBER
LTC1983ES6-3
LTC1983ES6-5
S6 PART
MARKING
LTPC
LTYB
Consult LTC Marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS The q denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VIN = 5V, CFLY = 1µF, COUT = 10µF
unless otherwise noted.
PARAMETER
VIN Operating Voltage (Regulated Output Mode) (LTC1983-3)
VIN Min Startup Voltage
VOUT (LTC1983-3)
VOUT (LTC1983-5)
VIN Operating Current
VIN Operating Current (Open-Loop Mode) (LTC1983-5)
VIN Shutdown Current
Output Ripple
Open-Loop Output Impedance (LTC1983-3): ROUT
Open-Loop Output Impedance (LTC1983-5): ROUT
Oscillator Frequency
SHDN Input High
SHDN Input Low
SHDN Input Current
CONDITIONS
VIN ≥ 3.3V, IOUT ≤ 25mA
VIN ≥ 5V, IOUT ≤ 100mA
VIN ≥ 5V, VIN –5V ≥ IOUT • ROUT
VIN ≤ 5.5V, IOUT = 0µA, SHDN = VIN
VIN = 3.3V
VIN = 4.75V
SHDN = 0V, VIN ≤ 5.5V
3.3 ≤ VIN ≤ 5.5
VIN = 3.3V, VOUT = –3V
VIN = 3.3V, IOUT ≈ 50mA
VIN = 5V, IOUT ≈ 60mA
(Non-Burst Mode® Operation)
VSHDN = 5.5V
MIN TYP MAX UNITS
q 3.0
2.3
5.5 V
V
q –2.88 –3 –3.12
q –2.88 –3 –3.12
V
V
q – 4.8 –5 – 5.2
V
q
25 60
µA
2.5 mA
4 mA
q
0.1 1
µA
60 mVP-P
11 Ω
11 Ω
8.5 Ω
900 kHz
q 1.1
V
q 0.3 V
q
2.2 4
µA
Burst Mode is a registered trademark of Linear Technology
Corporation.
Note 1: Absolute Maximum Ratings are those values beyond
which the life of a device may be impaired.
Note 2: The LTC1983E-3/LTC1983E-5 are guaranteed to meet
performance specifications from 0°C to 70°C. Specifications over the
– 40°C to 85°C operating temperature range are assured by design,
characterization and correlation with statistical process controls.
2
sn1983 1983fs
|
PDF 파일 내의 페이지 : 총 12 페이지
제조업체: Linear Technology
( linear )
LTC1983-3 inverter
데이터시트 다운로드 :
[ LTC1983-3.PDF ]
[ LTC1983-3 다른 제조사 검색 ]
국내 전력반도체 판매점
상호 : 아이지 인터내셔날
전화번호 : 051-319-2877
[ 홈페이지 ]
IGBT, TR 모듈, SCR, 다이오드모듈, 각종 전력 휴즈
( IYXS, Powerex, Toshiba, Fuji, Bussmann, Eaton )
전력반도체 문의 : 010-3582-2743
관련 데이터시트
LTC1983-3
(LTC1983-3/-5) 100mA REGULATED CHARGE-PUMP INVERTERS - Linear Technology
LTC1983-5
(LTC1983-3/-5) 100mA REGULATED CHARGE-PUMP INVERTERS - Linear Technology