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LTC1983-3/LTC1983-5

sn1983 1983fs

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

ORDER PART

NUMBER

S6 PART

MARKING

TJMAX = 125°C, θJA = 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

PACKAGE/ORDER I FOR ATIO

(Note 1)

ELECTRICAL CHARACTERISTICS

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.

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

CONDITIONS

MIN

TYP

MAX

UNITS

VIN Operating Voltage (Regulated Output Mode) (LTC1983-3)

3.0

5.5

VIN Min Startup Voltage

2.3

VOUT (LTC1983-3)

VIN ≥ 3.3V, IOUT ≤ 25mA

–2.88

–3

–3.12

VIN ≥ 5V, IOUT ≤ 100mA

–2.88

–3

–3.12

VOUT (LTC1983-5)

VIN ≥ 5V, VIN –5V ≥ IOUT • ROUT

– 4.8

–5

– 5.2

VIN Operating Current

VIN ≤ 5.5V, IOUT = 0µA, SHDN = VIN

µA

VIN Operating Current (Open-Loop Mode) (LTC1983-5)

VIN = 3.3V

2.5

VIN = 4.75V

VIN Shutdown Current

SHDN = 0V, VIN ≤ 5.5V

0.1

µA

Output Ripple

3.3

≤ VIN ≤ 5.5

mVP-P

Open-Loop Output Impedance (LTC1983-3): ROUT

VIN = 3.3V, VOUT = –3V

Ω

Open-Loop Output Impedance (LTC1983-5): ROUT

VIN = 3.3V, IOUT ≈ 50mA

Ω

VIN = 5V, IOUT ≈ 60mA

8.5

Ω

Oscillator Frequency

(Non-Burst Mode

® Operation)

900

kHz

SHDN Input High

1.1

SHDN Input Low

0.3

SHDN Input Current

VSHDN = 5.5V

2.2

µA

VCC 1

VOUT 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.

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