2.2A输出电流4.75V至32V输入CXSD62232效率高达93%单片同步降压调节器90mΩ功率MOSFET开关可编程软启动

Pin Number

Pin Name

Description

1

BS

High-Side Gate Drive Boost Input. BS supplies the drive for the high-side N-Channel
MOSFET switch. Connect a 0.01μF or greater capacitor from SW to BS to power the
high side switch.

2

IN

Power Input. IN supplies the power to the IC, as well as the step-down converter
switches. Drive IN with a 4.75V to 32V power source. Bypass IN to GND with a
suitably large capacitor to eliminate noise on the input to the IC. See Input Capacitor.

3

SW

Power Switching Output. SW is the switching node that supplies power to the output.
Connect the output LC filter from SW to the output load. Note that a capacitor is
required from SW to BS to power the high-side switch.

4

GND

Ground.

5

FB

Feedback Input. FB senses the output voltage to regulate that voltage. Drive FB
with a resistive voltage divider from the output voltage. The feedback threshold
is 0.923V. See Setting the Output Voltage.

6

COMP

Compensation Node. COMP is used to compensate the regulation control loop.
Connect a series RC network from COMP to GND to compensate the regulation
control loop. In some cases, an additional capacitor from COMP to GND is
required. See Compensation Components.

7

EN

Enable Input. EN is a digital input that turns the regulator on or off. Drive EN high to
turn on the regulator, drive it low to turn it off. Pull up with 100kΩ resistor for
automatic startup.

8

SS

Soft-Start Control Input. SS controls the soft start period. Connect a capacitor from SS
to GND to set the soft-start period. A 0.1μF capacitor sets the soft-start period to 15ms.
To disable the soft-start feature, leave SS unconnected.

Parameters

Symbol

Test Condition

Min.

Typ.

Max.

Unit

Input Under Voltage Lockout
Threshold

VIN Rising

3.80

4.10

4.40

V

Input Under Voltage Lockout
Threshold Hysteresis

210

mV

Soft-Start Current

VSS = 0V

6

μA

Soft-Start Period

CSS = 0.1μF

15

ms

*
Thermal ShuJTMTown

160

°C

PWM Buck Converter（synchronous)

Part No.

Input

Output Voltage

Current

Frequency

Efficiency

Package

Precision

OCP

OTP

SP

Voltage

MAX

CXSD62225

40V

ADJ

600mA

1/2MHZ

85%

SOT23-6

2%

Y

Y

Y

CXSD62226A

23V

ADJ

2A

340KHZ

93%

SOP8

2%

Y

Y

Y

CXSD62227A

23V

ADJ

2.2A

340KHZ

93%

SOP8-PP

2%

Y

Y

Y

CXSD62228A

23V

ADJ

3.2A

340KHZ

93%

SOP8-PP

2%

Y

Y

Y

CXSD62228B

23V

ADJ(PSM)

3.2A

340KHZ

93%

SOP8-PP

2%

Y

Y

Y

CXSD62229

32V

ADJ

2A

340KHZ

93%

SOP8-PP

2%

Y

Y

Y

CXSD62229A

32V

ADJ

2A

600KHZ

93%

SOP8-PP

2%

Y

Y

Y

CXSD62230

32V

ADJ

1.6A

340KHZ

93%

SOP8

2%

Y

Y

Y

CXSD62231

32V

ADJ

2.2A

340KHZ

93%

SOP8-PP

2%

Y

Y

Y

CXSD62231A

32V

ADJ

2.2A

600KHZ

93%

SOP8-PP

2%

Y

Y

Y

CXSD62231B

22V

ADJ

3A

600KHZ

93%

SOP8-PP

2%

Y

Y

Y

CXSD62232

32V

ADJ

2.2A

200KHZ

93%

SOP8-PP

2%

Y

Y

Y

CXSD62233

32V

ADJ

3A

340KHZ

93%

SOP8-PP

2%

Y

Y

Y

CXSD62234

5.5V

1.2/.15/1.8/ADJ

800mA

1.5MHZ

96%

SOT23-5

2%

Y

Y

Y

CXSD62235

5.5V

1.2/.15/1.8/ADJ

1.2A

1.5MHZ

96%

SOT23-5

2%

Y

Y

Y

CXSD62235B

5.5V

1.2/.15/1.8/ADJ

1.2A

1.5MHZ

96%

SOT23-5

2%

Y

Y

Y

CXSD62236

5.5V

1.2/.15/1.8/ADJ

1.2A

1.5MHZ

96%

SOT23-5

2%

Y

Y

Y

CXSD62237

5.5V

1.2/.15/1.8/ADJ

2A

1.5MHZ

96%

SOT23-5

2%

Y

Y

Y

CXSD62238

5.5V

1.2/.15/1.8/ADJ

1.5A*2

1.5MHZ

96%

SOP8

2%

Y

Y

Y