The JTMA7237 is a fixed switching frequency (1.5MHz typical)

1.产品概述         2.产品特点
3.应用范围       4.下载产品资料PDF文档
5.产品封装图                     6.电路原理图
7.功能概述       8.相关产品

一,产品概述(General Description)
The JTMA7237 is a fixed switching frequency (1.5MHz typical), current-mode,
step-up regulator with an inte-grated N-channel MOSFET. The device allows the usage
of small inductors and output capacitors for portable devices. The current-mode control scheme provides fast transient response and good output voltage accuracy. The JTMA7237 includes under-voltage lockout, current-limit, and over-temperature shutdown preventing dam-age in the event of an output overload

二.产品特点(Features)
1.)Wide 2.7V to 6V Input Voltage Range
2.)Built-in 0.2Ω N-Channel MOSFET
3.)Built-in Soft-Start
4.)High Efficiency up to 90%
5.)<1µA Quiescent Current During Shutdown
6.)Current-Mode Operation
Stable with Ceramic Output Capacitors
Fast Transient Response
7.)Current-Limit Protection
8.)Over-Temperature Protection with Hysteresis
9.)Available in a TSOT-23-5A and TDFN2x2-6 Pack-age
10.)Lead Free and Green Devices Available(RoHS Compliant)

三,应用范围 (Applications)
Cell Phone and Smart Phone
PDA, PMP, MP3
Digital Camera
Boost Regulators

四.下载产品资料PDF文档

jtma7237

五,产品封装图 (Package)

FUNCTION

PIN.			FUNCTION
TSOT-23-5A	TDFN-2x2-6	NAME	FUNCTION
1
6	LX	Switch pin. Connect this pin to inductor/diode here.
2	2, 5	GND	Power and signal ground pin.
3	4	FB	Feedback Input. The device senses feedback voltage via FB and regulate the voltage at 1.23V. Connecting FB with a resistor-divider from the output that sets the output voltage.
4	3	EN	Enable Control Input. Forcing this pin above 1.0V enables the device. Forcing this pin below 0.4V to shut it down. In shutdown, all functions are disabled to decrease the supply current below 1µA. Do not left this pin floating.
5	1	VIN	Main Supply Pin. Must be closely decoupled to GND with a 2.2µF or greater ceramic capacitor.

(责任编辑：oumao18)