The JTMA7085 is a 2A, asynchronous, step-down con-verter wit

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 JTMA7085 is a 2A, asynchronous, step-down con-verter with integrated
100mΩ P-channel MOSFET. The device, with current-mode control scheme, can
convert 4.5~26V input voltage to the output voltage adjustable from 0.8 to 90% VIN
to provide excellent output voltage regulation.
The JTMA7085 regulates the output voltage in automatic PSM/PWM mode
operation, depending on the output current, for high efficiency operation over light
to full load current. The JTMA7085 is also equipped with power-on-reset, soft-start, and whole protections (under-voltage,over- temperature, and current-limit) into a single
package.In shutdown mode, the supply current drops below 5µA.This device, available
in a 8-pin SOP-8 package, pro-vides a very compact system solution with minimal exter-
nal components.

二.产品特点(Features)
Wide Input Voltage from 4.5V to 26V
Output Current up to 2A
Adjustable Output Voltage from 0.8V to 90%VIN
- 0.8V Reference Voltage
- ±2.5% System Accuracy
100mΩ Integrated P-Channel Power MOSFET
High Efficiency up to 91%
- Pulse-Skipping Mode (PSM) / PWM Mode Op-eration
Current-Mode Operation
- Stable with Ceramic Output Capacitors
- Fast Transient Response
Power-On-Reset Monitoring
Fixed 380kHz Switching Frequency in PWM Mode
Built-in Digital Soft-Start
Output Current-Limit Protection with Frequency Foldback
70% Under-Voltage Protection
Over-Temperature Protection
<5µA Quiescent Current During Shutdown SOP-8 Package
Lead Free and Green Devices Available (RoHS Compliant)

三,应用范围 (Applications)
LCD Monitor / TV
Set-Top Box
Portable DVD
Wireless LAN
ADSL, Switch HUB
Notebook Computer
Step-Down Converters Requiring High Efficiency and 2A Output Current

四.下载产品资料PDF文档

jtma7085

jtma7089

五,产品封装图 (Package)

六.电路原理图

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