Download Datasheets TC170 Device 
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Home - Analog & Interface Products - Power Management - PWM Controllers - TC170 Device, download datasheet

Download Datasheets TC170 Device


The TC170 brings low-power CMOS technology to the current-mode-switching power supply controller market. Maximum supply current is 3.8 mA.Bipolar current-mode control integrated circuits require five times more operating current. The dual totem-pole CMOS outputs drive power MOSFETs or bipolar transistors.The 50nsec typical output rise and fall times (1000pF capacitive loads)minimize MOSFET power dissipation.Output peak current is 300mA. The TC170 contains a full array of system-protection circuits (see features). Current-mode control lets users parallel power supply modules.Two or more TC170 controllers can be slaved together for parallel operation.Circuits can operate from a master TC170 internal oscillator or an external system oscillator. The TC170 operates from an 8V to 16V power supply. An internal 2%,5.1V reference minimizes external component count.The TC170 is pin compatible with the Unitrode UC1846/2846/3846 bipolar controller. Other advantages inherent in current-mode control include superior line and load regulation and automatic symmetry correction in push-pull converters.

Datasheet and Other Documentation

Detailed Content

Lit. Number

Download

 

TC170 Datasheet

21395a

Download TC170 Datasheet

Status

In Production

Specification Chart

Type

Input Voltage (V)

Quiescent Current (mA)

Maximum Frequency (kHz)

Current mode

8 to 16

4

200

Additional Features

Low Supply Current With CMOS Technology 3.8mA Max
Internal Reference 5.1V
Fast Rise/Fall Times (CL = 1000pF) 50nsec
Dual Push-Pull Outputs
Direct-Power MOSFET Drive
High Totem-Pole Output Drive 300mA
Differential Current-Sense Amplifier
Programmable Current Limit
Soft-Start Operation
Double-Pulse Suppression
Undervoltage Lockout
Wide Supply Voltage Operation 8V to 16V
High Frequency Operation 200kHz
Available with Low OFF State Outputs
Low Power, Pin-Compatible Replacement for UC3846

Package Options



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