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Siehe Technische Spezifikationen

UC2525AN +BOM

35V, Dual 0.4A 400KHz PWM controller with -25C to 85C

Hersteller:

TI
Herstellerteil #:

UC2525AN
Datenblatt:

UC2525AN Datenblatt (PDF)
Topology:

Boost, Buck, Flyback, Forward, Full bridge, Half bridge, Push pull
Control mode:

Voltage
Duty cycle (max) (%):

49
Switching frequency (max) (kHz):

500
EDA/CAD Modelle:

Fordern Sie kostenlose CAD-Modelle für an UC2525AN

Email: [email protected]

Skype: live:.cid.ab6b29428937b76

Tel: +852 95804164

UC2525AN Allgemeine Beschreibung

The UC1525A/1527A series of pulse width modulator integrated circuits are designed to offer improved performance and lowered external parts count when used in designing all types of switching power supplies. The on-chip 5.1-V reference is trimmed to 1% and the input common-mode range of the error amplifier includes the reference voltage, eliminating external resistors. A sync input to the oscillator allows multiple units to be slaved or a single unit to be synchronized to an external system clock. A single resistor between C_T and the discharge terminals provides a wide range of dead-time adjustment. These devices also feature built-in soft-start circuitry with only an external timing capacitor required. A shutdown terminal controls both the soft-start circuitry and the output stages, providing instantaneous turn off through the PWM latch with pulsed shutdown, as well as soft-start recycle with longer shutdown commands.

Hauptmerkmale

8-V to 35-V Operation
5.1-V Reference Trimmed to 1%
100-Hz to 500-kHz Oscillator Range
Separate Oscillator Sync Terminal
Adjustable Dead-Time Control
Internal Soft Start
Pulse-by-Pulse Shutdown
Input Undervoltage Lockout With Hysteresis
Latching PWM to Prevent Multiple Pulses
Dual Source and Sink Output Drivers

Anwendung

Input rectifier for switching power supplies (SMPS)

Softstart capacitor charging

Electric drives and auxiliaries

Spezifikationen

Topology	Boost, Buck, Flyback, Forward, Full bridge, Half bridge, Push pull	Control mode	Voltage
Duty cycle (max) (%)	49	Switching frequency (max) (kHz)	500
Features	Adjustable switching frequency, Current limiting, Dead time control, Error amplifier, Multi-topology, Soft start, Synchronization pin	UVLO thresholds on/off (V)	7/6.5
Operating temperature range (°C)	-25 to 85	Rating	Catalog
Gate drive (typ) (A)	0.4	Vin (max) (V)	40

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