CS5111 datasheet(3/10 Pages) CHERRY

номер детали	CS5111

подробное описание детали	1.4A Switching Regulator with 5V, 100mA Linear Regulator with Watchdog, RESET and ENABLE

PDF	10 Pages

Scroll/Zoom	100%

производитель	CHERRY [Cherry Semiconductor Corporation]

домашняя страница	http://www.cherrycorp.com/

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3 / 10 page

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Electrical Characteristics: 5V ≤ VIN ≤ 26V and -40°C ≤ TJ ≤ 150°C, COUT=100µF(ESR ≤ 8Ω), CDelay = 0.1µF, RBIAS = 64.9k,

COSC = 390 pF, CCOMP = 0.1µF unless otherwise specified.

Watchdog Input (WDI)

VIH

Peak WDI needed to activate

2.0

VIL

0.8

Hysteresis

Note 1

Pull-Up Resistor

WDI=0V

100

kΩ

Low Threshold

6.25

8.78

11.0

Floating Input Voltage

3.5

WDI Pulse Width

5µs

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 50Ω 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 50Ω 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

kΩ

Select Input

VIL (Selects VFB1)

4.9 ≤ VLIN ≤ 5.1

0.8

1.25

VIH (Selects VFB2)

4.9 ≤ VLIN ≤ 5.1

1.25

2.0

SELECT Pull-Up

SELECT = 0V

kΩ

Floating Input Voltage

3.5

4.5

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

ENABLE

RESET

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