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UCC384DPTR-12

Name: UCC384DPTR-12
Rating: 4.7 (12 reviews)

IC REG LINEAR -12V 500MA 8SOIC

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製造商。部分 #UCC384DPTR-12
包 SOIC (D)-8
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規格

Package	Tape & Reel (TR),Bulk
ProductStatus	Active
OutputConfiguration	Negative
OutputType	Fixed
NumberofRegulators	1
Voltage-Input(Max)	-15V
Voltage-Output(Min/Fixed)	-12V
VoltageDropout(Max)	0.5V @ 500mA
Current-Output	500mA
Current-Quiescent(Iq)	350 µA
ProtectionFeatures	Over Temperature, Reverse Polarity, Short Circuit, Under Voltage Lockout (UVLO)
OperatingTemperature	0°C ~ 70°C
MountingType	Surface Mount
Package/Case	8-SOIC (0.154, 3.90mm Width)

概述

Description

UCC384DPTR-12 is TI’s 12-pin DIP (PTR-12) version of the UCC384D current‑mode PWM controller. It’s intended for off‑line and DC‑DC switch‑mode power supplies (e.g., flyback, forward, buck/boost). Operation is current‑mode control: a current sense input (IS) plus a feedback/comp input (FB/COMP) modulate a PWM output that drives an external switching transistor (MOSFET). Key features typically include:
- High‑voltage startup and regulated VCC
- Adjustable oscillator frequency via RT/CT
- Soft‑start and enable/disable option
- Protections: undervoltage lockout, overcurrent/current limit, thermal shutdown
- Slope compensation (in many designs)
Applications: power adapters, consumer electronics supplies, and low‑to‑medium power SMPS.
Note: exact pinout, electrical specs, and recommended circuit topologies depend on the specific datasheet for UCC384D PTR‑12. Refer to TI’s datasheet for full details.

Features

Here are typical features of the TI UCC384DPTR-12 (UCC384D family) PWM controller:
- 8-pin device in D/PTR package (DIP with Tape & Reel)
- Current-mode PWM controller for switch-mode power supplies (flyback, buck-boost, etc.)
- High-voltage startup current source (no bias winding required)
- Undervoltage lockout (UVLO) with hysteresis
- Cycle-by-cycle peak current limit with slope (current-mode control)
- Thermal shutdown protection
- Soft-start to limit inrush and output overshoot
- Enable/Shutdown input for disable control
- External feedback via FB/COMP for regulation
- Suitable for fixed-frequency operation in SMPS designs
Note: exact pinout, timing, and voltage specs vary by revision; consult the TI datasheet for precise details.

Pinout

- Pin count: 8 pins (DIP-8; PTR indicates Plastic DIP with Tape & Reel packaging).
- Function: UCC384DPTR-12 is an 8‑pin current‑mode PWM controller for switch‑mode power supplies. It drives an external MOSFET and uses current sense and feedback inputs (with RT/CT timing) to regulate SMPS output (e.g., flyback/forward converters), and includes protections (undervoltage lockout, overcurrent, soft-start).

Manufacturer

- Manufacturer: Texas Instruments (TI).
- What kind of company: An American multinational semiconductor company that designs and manufactures analog, mixed-signal, and embedded processing integrated circuits; one of the world’s largest semiconductor suppliers (headquartered in Dallas, TX).

Application

Typical uses: offline and isolated switch‑mode power supplies (flyback/forward), AC‑DC adapters and battery chargers, standby/auxiliary power for TVs and monitors, LED drivers, telecom and industrial DC‑DC supplies, and other current‑mode PWM regulated power‑management circuits.

Equivalent

Direct TI equivalents: UC3842/3843/3844/3845 (UCC384x family; typically pin-compatible in 8-pin packages).
Non‑TI cross references: On Semiconductor NCP1200/NCP1202/NCP1250/NCP1251 (current‑mode PWM controllers for offline SMPS).
Note: exact substitution depends on needed frequency, startup current, and reference voltage; always verify datasheet cross‑reference and pinout compatibility.