Datasheet
LTC1983-3/LTC1983-5
2
1983fa
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
ORDER PART
NUMBER
S6 PART
MARKING
T
JMAX
= 125°C, θ
JA
= 256°C/W
Consult LTC Marketing for parts specified with wider operating temperature ranges.
LTPC
LTYB
LTC1983ES6-3
LTC1983ES6-5
ABSOLUTE AXI U RATI GS
W
WW
U
PACKAGE/ORDER I FOR ATIO
UUW
(Note 1)
ELECTRICAL CHARACTERISTICS
Burst Mode is a registered trademark of Linear Technology Corporation.
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.
The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
IN
= 5V, C
FLY
= 1µF, C
OUT
= 10µF unless otherwise noted.
PARAMETER CONDITIONS MIN TYP MAX UNITS
V
IN
Operating Voltage (Regulated Output Mode) (LTC1983-3) ● 3.0 5.5 V
(LTC1983-5) 5.0 5.5 V
V
IN
Minimum Startup Voltage 2.3 V
V
OUT
(LTC1983-3) V
IN
≥ 3.3V, I
OUT
≤ 25mA ● –2.88 –3 –3.12 V
V
IN
≥ 5V, I
OUT
≤ 100mA ● –2.88 –3 –3.12 V
V
OUT
(LTC1983-5) V
IN
≥ 5V, V
IN
–5V ≥ I
OUT
• R
OUT
● – 4.8 –5 –5.2 V
V
IN
Operating Current V
IN
≤ 5.5V, I
OUT
= 0µA, SHDN = V
IN
● 25 60 µA
V
IN
Operating Current (Open-Loop Mode) (LTC1983-5) V
IN
= 3.3V 2.5 mA
V
IN
= 4.75V 4 mA
V
IN
Shutdown Current SHDN = 0V, V
IN
≤ 5.5V ● 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
Open-Loop Output Impedance (LTC1983-5): R
OUT
V
IN
= 3.3V, I
OUT
≈ 50mA 11 Ω
V
IN
= 5V, I
OUT
≈ 60mA 8.5 Ω
Oscillator Frequency (Non Burst Mode
®
Operation) 900 kHz
SHDN Input High ● 1.1 V
SHDN Input Low ● 0.3 V
SHDN Input Current V
SHDN
= 5.5V ● 2.2 4 µA
V
CC
1
V
OUT
2
C
+
3
6 SHDN
5 GND
4 C
–
TOP VIEW
S6 PACKAGE
6-LEAD PLASTIC SOT-23
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.
Order Options Tape and Reel: Add #TR
Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF
Lead Free Part Marking: http://www.linear.com/leadfree/