The JTMA7165Cis a voltage mode, fixed 300kHz-switching frequ

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 JTMA7165C is a voltage mode, fixed 300kHz-switching frequency,
and synchronous buck controller. The JTMA7165C allows wide input voltage
that is either a single 5~12V or two supply voltage(s) for various applications.
A power-on-reset (POR) circuit monitors the VCC supply voltage to prevent
wrong logic controls. A built-in digital soft-start circuit prevents the output
voltages from overshoot as well as limits the input current. An internal
0.6V temperature-compensated reference voltage with high accuracy is
designed to meet the requirement of low output voltage applications.
The JTMA7165C provides excellent output voltage regulations against
load current variation.
The controller’s over-current protection monitors the output current
by using the voltage drops across the RDS(ON)of low-side MOSFET,
eliminating the need for a current sensing resistor that features high
efficiency and low cost.
The JTMA7165C also integrates over-voltage protection (OVP) and
under-voltage protection circuit which moni-tors the FB voltage to prevent
the PWM output from over and under voltage.
The JTMA7165C is available in a simple SOP-8P package.

二.产品特点(Features)
Wide Operation Supply Voltage from 5V to 12V
Power-On-Reset Monitoring on VCC
Excellent Reference Voltage Regulations
- 0.6V Internal Reference
- ±1% Over Temperature Range
Integrated Soft-Start
Automatic PSM/PWM Modes
Voltage Mode PWM Operation with 90% (Max.) Duty Cycle
Under-Voltage Protection
Adjustable Over-Current Protection Threshold
- Sensing the RDS(ON) of Low-Side MOSFET
Over-Voltage Protection
Under-Voltage Protection
Simple SOP-8P Package
Lead Free and Green Devices Available
(RoHS Compliant)

三,应用范围 (Applications)
Graphic Cards
DSL, Switch HUB
Wireless Lan
Notebook Computer
Mother Board
LCD Monitor/TV

四.下载产品资料PDF文档

JTMA7165

五,产品封装图 (Package)

六.电路原理图 (责任编辑：oumao18)