UCC38084

所属类别：ACDC-和-DCDC-电源
产品名称：具有可编程斜率补偿的电流模式推挽 PWM
厂商：TI
生产批号：11+
封装：8PDIP, 8SOIC, 8TSSOP
库存状态：有库存
库存量：20000
最低订购量：1
详细资料：

Product Introduction

The UCC38083/4/5/6 is a series of BiCMOS pulse-width modulation (PWM) DC-to-DC or off-line fixed-frequency current-mode switching power controllers. This dual output stage configuration is a push-pull topology. Half of the oscillators of the two output switches use one switch flip-flop frequency. The dead zone time between two outputs is typically 110 nanoseconds, limiting the duty cycle to less than 50% per output.

The new UCC3808x family is based on UCC3808A architecture. Key differences include a programmable slope compensation ramp to CS signal and increased relocation of error amplifiers. Currently, the SSET pin flows through an external resistor to set the severity of the ramp compensation function internally monitored.

characteristic

Programmable slope compensation
Internal soft-start UCC38083 / 4
Cycle-by-cycle current limit
Typical operation with low start-up of 120μA and 1.5 mA current
The external element oscillator is programmable from 50 kHz to 1 MHz
High-current totem pole output stage drivers with dual push-pull 1-one receiver and 0.5-A source configuration capability
Current-sensing discharge transistors to improve dynamic response
Internal fine-tuning bandgap datum
Undervoltage lockout and hysteresis
apply
- High-efficiency switch-mode power supply
- Telecom DC to DC converter
- Available power modules for point loads or points
- Low-cost push-pull and semi-bridge applications

parameter

		UCC38084
topology		Boost, buck, half-bridge, push-pull
Control method		Current mode
Duty Cycle (Max) (%)		50
Frequency (max) (kHz)		1000
On/off of undervoltage lockout threshold (5)		4.3/4.1
Pin/Pack		8PDIP，8SOIC，8TSSOP
(#) Regulated output		2
Operating Temperature Range (°C)		0 to 70

ICs related to UCC38084 include:

Model	Manufacturers	lot number	encapsulation	illustrate
UCC38084	TI	11+	8PDIP, 8SOIC, 8TSSOP	Current-mode push-pull PWM with programmable slope compensation

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TI brand product recommendation

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UCC38083	TI	10+	8PDIP, 8SOIC, 8TSSOP	Current-mode push-pull PWM with programmable slope compensation
UCC3808-2	TI	10+	8PDIP, 8SOIC	Low-power current-mode push-pull PWM
UCC3808-1	TI	10+	8PDIP, 8SOIC	Low-power current-mode push-pull PWM
UCC3807-3	TI	10+	8PDIP, 8SOIC	Programmable maximum duty cycle PWM controller
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UCC3805	TI	09+	8PDIP, 8SOIC, 8TSSOP	Low-power BiCMOS current-mode PWM
UCC3804	TI	10+	8PDIP, 8SOIC, 8TSSOP	Low-power BiCMOS current-mode PWM
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UCC3802	TI	10+	8PDIP, 8SOIC, 8TSSOP	Low-power BiCMOS current-mode PWM
UCC3801	TI	10+	8PDIP, 8SOIC, 8TSSOP	Low-power BiCMOS current-mode PWM
UCC3800	TI	09+	8PDIP, 8SOIC, 8TSSOP	Low-power BiCMOS current-mode PWM
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UCC38084

parameter

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