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BN1F4M PDF Datasheet – 50V, 0.1A, PNP Transistor

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Part Number: BN1F4M

Function: 50V, 0.1A, PNP SIlicon Transistor

Manufacturer: NEC

Images:BN1F4M pinout datasheet

Description

This is 50V, 100mA, PNP Silicon Transistor. The BN1F4M is designed for use in medium speed switching circuit.

Features:

1. Bias resistors built-in type PNP transistor equivalent circuit.

BN1F4M pdf transistor

Absolute maximum ratings ( Ta=25°C )

1. Collector to Base Voltage: Vcbo = – 60 V

2. Collector to Emitter Voltage: Vceo = – 50 V

3. Emitter to Base Voltage: Vebo = – 10 V

4. Collector Current: Ic = – 100 mA

5. Total Power Dissipation : Pc = 250 mW

6. Junction Temperature: Tj = 150°C

7. Storage Temperature: Tsg = -55 ~ +150°C

BN1F4M PDF Datasheet

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BIT3252A PDF Datasheet – Low Cost PWM Controller

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Part Number: BIT3252A

Function: Low Cost PWM Controller

Package: SOP-8 Type

Manufacturer: Beyond Innovation Technology

Images:BIT3252A pdf pinout

 

Description

The BIT3252A is a high frequency PWM controller which integrates the required functions for a boost converter in a small SOP-8 package. A low 0.2V feedback voltage makes the system with high efficiency and its over voltage protection function makes the system reliable. Built-in 55V/1.2A NMOS save the space of PCB and simplify the circuit design.

Features

1. Voltage Mode PWM Controller

2. Low 0.2V reference Voltage

3. 330KHz Operation

4. Over Voltage Protection

5. Internal Soft-Start

6. Built-in 55V NMOS

7. Internal UVLO (Under Voltage Lock Out)

8. Limited Output Duty Cycle

9. Low Shutdown current (0.1uA)

BIT3252A datasheet controller

1. The PWM Controller:

The pulse width modulation control circuit includes a ramp wave generator, an error amplifier and a comparator. These devices provide the required functions for the PWM feedback control application. The inverting input of the error amplifier is pulled high to reduce its output CMP when VDD<3.6V. The maximum duty cycle of the PWM controller is limited to 93%

2. The Over Voltage Protection:

BIT3252A has an OVP pin that is used to detect the converter output voltage, when there is a voltage higher than 1.5V sensed in this pin, BIT3252A will latch off its output This latch off function can make system operation more reliable. The latched off status can be released by reducing the supply voltage to lower than 3.6V.

BIT3252A PDF Datasheet