Absolute Maximum Ratings

Vin, EN, Voltage …………………... -0.3V to 19V

Operating Temperature Range ….. -40°C to +85°C

FB Voltages …………………………… -0.3 to 6V

Lead Temperature (Soldering, 10s) ……... +300°C

Thermal Resistance (θJA) ……………..

160 °C/W

Thermal Resistance（θJC）………...…130 °C/W

SW Voltage ……………………… -0.3V to (VIN+0.5V)

Storage Temperature Range …………… -65°C to 150°C

BS Voltage …………………….. (Vsw-0.3) to (Vsw+5V)

ESD (Machine Made) MM…………….…………200V

ESD (Human Body Made) HMB…………………2KV

Note 1: Exceeding these ratings may damage the device.

Note 2: The device is not guaranteed to function outside of its operating conditions

Pin Description

Pin Configuration

5

BS

FB

EN

GND

IN

SW

4

6

2

3

1

5

BS

FB

EN

GND

IN

SW

4

6

2

3

1

TOP VIEW

SOT23-6

5

BS

FB

EN

GND

IN

SW

4

6

2

3

1

TOP VIEW

SOT23-6

Pin Description

Pin

Name

Function

1

GND

GROUND Pin

2

SW

Switching Pin

3

IN

Power Supply Pin

4

FB

Adjustable Version Feedback input. Connect FB to the center point of the external

resistor divider

5

EN

Drive this pin to a logic-high to enable the IC. Drive to a logic-low to disable the IC

and enter micro-power shutdown mode.

6

BS

Bootstrap. A capacitor connected between SW and BST pins is required to form a

floating supply across the high-side switch driver.

Order Information

Marking

Part No.

Model

Description

Package

MOQ

BFYLL

70301032

BM1588

BM1588 Buck, 4-18V, 2A, 500KHz, VFB

0.8V, SOT23-6

SOT23-6

3000PCS

BM1588

BooklyMicro semiconductors

www.bookly.com

BM1588

BM1588A

VFB=0.6V

VFB=0.8V