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SC104EVB

Micro Power Constant-Current DC-DC Converter

Semtech Corporation 

SC104

POWER MANAGEMENT

Electrical Characteristics (Cont.)

Unless specified: VIN = VEN = 2V, -40 ≤ TA ≤ 85°C, typical values are at room temperature.

Parameter

Symbol

Test Conditions

Min

Adjust Input Current

Maximum Switch Current

Switch Off Time

Switch On Time

Maximum Duty Cycle

Switch Leakage

Voltage Reference for Current Limit

Setting Resistor

ILX to ILIM Ratio

Logic Inputs

IADJ

VADJ = 0V

6

VADJ = 1V

-500

VADJ = 1.25V

-1.3

ILX

ILI M= 150µA

-920

tOFF

VFB = 300mV

0.60

VFB = 0V

1.00

tON

excludes current limited conditions 1.8

%DC

70

ILX

switch off, VLX = 5V

VLIM

ILIM = 50µA

385

ILX / ILIM

ILIM = 50µA

7100

Enable Input Voltage

VIH

VIL

Enable Input Bias Current

IIL

IIH

Note:

(1) Guaranteed by design.

IEN > 300nA

1.5

VEN = 0.3V

VEN = 1.3V

Typ

10

0

-2.3

0.76

1.25

2.25

-0.01

400

8150

Max Units

20

µA

500 nA

-3.8 µA

mA

1.00 µs

1.60

2.7 µs

%

-1.0 µA

410 mV

8800 A/A

V

0.2

0.3 µA

0.7

 2005 Semtech Corp.

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