CS5112 datasheet(3/10 Pages) CHERRY

3 / 10 page

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

s Watchdog Input (WDI)

VIH

Peak WDI needed to activate

2.0

VIL

0.8

Hysteresis

Note 1

Pull-Up Resistor

WDI=0V

100

k½

Low Threshold

6.25

8.78

11.0

Floating Input Voltage

3.5

WDI Pulse Width

5µs

s Switcher Section

Minimum Operating

5.0

Input Voltage

Switching Frequency

Refer to Figure 1d.

110

kHz

Switch Saturation Voltage

ISW = 1.4A

0.7

1.1

1.6

Output Current Limit

1.4

2.5

Max Switching Frequency

VSW = 7.5V with 50½ load,

120

kHz

Refer to Figure 1d.

VFB1 Regulation Voltage

1.206

1.25

1.294

VFB2 Regulation Voltage

1.206

1.25

1.294

VFB1, VFB2 Input Current

VFB1 = VFB2 = 5V

µA

Oscillator Charge Current

COSC = 0V

µA

Oscillator Discharge Current

COSC = 4V

270

320

370

µA

CDelay Charge Current

CDelay = 0V

µA

Switcher Max Duty Cycle

VSW = 5V with 50½ load,

VFB1 = VFB2 = 1V

Current Sense Amp Gain

ISW = 2.3A

Error Amp DC Gain

Error Amp Transconductance

2700

µA/V

Input

VIL

0.8

1.24

VIH

1.30

2.0

Hysteresis

Input Impedance

k½

s Select Input

VIL (Selects VFB1)

4.9 ² VLIN ² 5.1

0.8

1.25

VIH (Selects VFB2)

4.9 ² VLIN ² 5.1

1.25

2.0

SELECT Pull-Up

SELECT = 0V

k½

Floating Input Voltage

3.5

4.5

Note 1: Guaranteed by Design, not 100% tested in production.

ENABLE

RESET

Electrical Characteristics: 5V ² VIN ² 26V and -40¡C ² TJ ² 150¡C, -40¡C ² TA ² 85¡C, COUT = 100µF (ESR²8½),

CDelay = 0.1µF, RBIAS = 64.9k½, COSC = 390 pF, CCOMP = 0.1µF; unless otherwise specified.

CS5112 Datasheet(PDF) 3 Page - Cherry Semiconductor Corporation

CS5112 Datasheet(HTML) 3 Page - Cherry Semiconductor Corporation

Html Pages

1 2 3 4 5 6 7 8 9 10

Datasheet Download

Link URL