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LTC1983ES6-5#TRMPBF

P1-P3P4-P6P7-P9P10-P12P13-P14
LTC1983-3/LTC1983-5
1
1983fc
For more information www.linear.com/LTC1983-3
Typical applicaTion
FeaTures DescripTion
100mA Regulated
Charge-Pump Inverters
in ThinSOT
The LT C
®
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
(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.
–3V at 100mA DC/DC Converter V
OUT
vs I
OUT
applicaTions
n
Fixed Output Voltages: –3V, –5V or Low Noise V
IN
to –V
IN
Inverted Output
n
±4% Output Voltage Accuracy
n
Low Quiescent Current: 25µA
n
100mA Output Current Capability
n
2.3V to 5.5V Operating Voltage Range
n
Internal 900kHz Oscillator
n
“Zero Current” Shutdown
n
Short-Circuit and Over-Temperature Protected
n
Low Profile (1mm) ThinSOT
TM
Package
n
–3V Generation in Single-Supply Systems
n
Portable Equipment
n
LCD Bias Supplies
n
GaAs FET Bias Supplies
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
10µF
C
IN
10µF
C
F LY
1µF
OFF ON
C
F LY
: TAIYO YUDEN LMK212BJ105
C
IN
, C
OUT
: TAIYO YUDEN JMK316BJ106ML
1983-3 TA01
I
OUT
(mA)
0
V
OUT
(V)
–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
L, LT , LT C , LT M , Linear Technology, Burst Mode and the Linear logo are registered trademarks
and ThinSOT is a trademark of Linear Technology Corporation. All other trademarks are the
property of their respective owners.
LTC1983-3/LTC1983-5
2
1983fc
For more information www.linear.com/LTC1983-3
absoluTe MaxiMuM raTings
V
IN
to GND ................................................... –0.3V to 6V
SHDN Voltage .............................................. –0.3V to 6V
V
OUT
to GND (LTC1983-3) ................... 0.2V to V
OUT
Max
V
OUT
to GND (LTC1983-5)................... 0.2V to V
OUT
Max
I
OUT
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
(Note 1)
V
CC
1
V
OUT
2
C
+
3
6 SHDN
5 GND
4 C
–
TOP VIEW
S6 PACKAGE
6-LEAD PLASTIC SOT-23
T
JMAX
= 125°C, θ
JA
= 256°C/W
elecTrical characTerisTics
PARAMETER CONDITIONS MIN TYP MAX UNITS
V
IN
Operating Voltage (Regulated Output Mode) (LTC1983-3)
(LTC1983-5)
l
3.0
5.0
5.5
5.5
V
V
V
IN
Minimum Startup Voltage 2.3 V
V
OUT
(LTC1983-3) V
IN
≥ 3.3V, I
OUT
≤ 25mA
V
IN
≥ 5V, I
OUT
≤ 100mA
l
l
–2.88
–2.88
–3
–3
–3.12
–3.12
V
V
V
OUT
(LTC1983-5) V
IN
≥ 5V, V
IN
–5V ≥ I
OUT
• R
OUT
l
–4.8 –5 –5.2 V
V
IN
Operating Current V
IN
≤ 5.5V, I
OUT
= 0µA, SHDN = V
IN
l
25 60 µA
V
IN
Operating Current (Open-Loop Mode) (LTC1983-5) V
IN
= 3.3V
V
IN
= 4.75V
2.5
4
mA
mA
V
IN
Shutdown Current SHDN = 0V, V
IN
≤ 5.5V
l
0.1 1 µA
Output Ripple 3.3 ≤ V
IN
≤ 5.5 60 mV
P-P
Open-Loop Output Impedance (LTC1983-3): R
OUT
V
IN
= 3.3V, V
OUT
= –3V 11 Ω
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
IN
= 5V, C
F LY
= 1µF, C
OUT
= 10µF unless otherwise noted.
pin conFiguraTion
orDer inForMaTion
LEAD FREE FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC1983ES6-3#PBF LTC1983ES6-3#TRPBF LTPC 6-Lead Plastic TSOT-23 –40°C to 85°C
LTC1983ES6-5#PBF LTC1983ES6-5#TRPBF LTY B 6-Lead Plastic TSOT-23 –40°C to 85°C
Consult LT C Marketing for parts specified with wider operating temperature ranges.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/. Some packages are available in 500 unit reels through
designated
sales channels with #TRMPBF suffix.
http://www.linear.com/product/LTC1983-3#orderinfo
LTC1983-3/LTC1983-5
3
1983fc
For more information www.linear.com/LTC1983-3
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
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.
Typical perForMance characTerisTics
Output Impedance vs
Input Voltage
Output Impedance
vs I
OUT
(LTC1983-5)
Efficiency vs I
OUT
(LTC1983-5)
Efficiency vs I
OUT
–3V
OUT
vs I
OUT
Over Temperature
–3V
OUT
vs I
OUT
Over Temperature
(V
IN
= 5V)
I
OUT
(mA)
0
EFFICIENCY (%)
40
80
100
90
80
70
60
50
40
30
20
10
0
1983 G01
20 60
V
IN
= 2.3V
V
IN
= 3.3V
V
IN
= 5V
T
A
= 25°C
V
IN
(V)
2.35
R
OUT
(Ω)
4.35
12.5
12.0
11.5
11.0
10.5
10.0
9.5
9.0
8.5
8.0
1983 TA02
3.35 5.35
R
OUT
I
OUT
= 25mA
T
A
= 25°C
I
OUT
(mA)
0
R
OUT
(Ω)
40
80
100
30
25
20
15
10
5
1983 G03
20 60
V
IN
= 2.3V
V
IN
= 3.3V
V
IN
= 5V
T
A
= 25°C
I
OUT
(mA)
0.01
100
75
50
25
0
10
1983 GO4
0.1 1 100
EFFICIENCY (%)
V
IN
= 5V
V
IN
= 3.3V
V
OUT
= –3V
T
A
= 25°C
OUTPUT CURRENT (mA)
0
–2.1
–2.3
–2.5
–2.7
–2.9
–3.1
–3.3
–3.5
60 100
1983 G05
20 40
80 120
V
OUT
(V)
120°C
–40°C, 0°C, 40°C
80°C
OUTPUT CURRENT (mA)
0
2.7
V
OUT
(–V)
2.8
2.9
3.0
3.1
3.3
20
40 60 80
1983 G06
100 120
3.2
–40°C
0°C
40°C
80°C
V
IN
= 5V
elecTrical characTerisTics
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
IN
= 5V, C
F LY
= 1µF, C
OUT
= 10µF unless otherwise noted.
PARAMETER CONDITIONS MIN TYP MAX UNITS
Open-Loop Output Impedance (LTC1983-5): R
OUT
V
IN
= 3.3V, I
OUT
≈ 50mA
V
IN
= 5V, I
OUT
≈ 60mA
11
8.5
Ω
Ω
Oscillator Frequency (Non Burst Mode
®
Operation) 900 kHz
SHDN Input High
l
1.1 V
SHDN Input Low
l
0.3 V
SHDN Input Current V
SHDN
= 5.5V
l
2.2 4 µA
P1-P3P4-P6P7-P9P10-P12P13-P14

LTC1983ES6-5#TRMPBF

Mfr. #:
Buy LTC1983ES6-5#TRMPBF
Manufacturer:
Analog Devices / Linear Technology
Description:
Switching Voltage Regulators 100mA Inverting Charge Pump in ThinSOT
Lifecycle:
New from this manufacturer.
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