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Description

The 8A978P is 5-Function Remote Controller.

The PTA977P (or 977W) and PT8A978P (or 978LW) provide a complete control functions to the remote-controlled toy. The PT8A977P/977W has five input pins corresponding with the five function buttons i.e, forward, backward, rightward, leftward and turbo. The encoding circuit in the PT8A977P/977W sends digital codes to the two output pins SO and SC. The digital codes correspond to the definite function buttons or their combinations. The SO and SC outputs are used in wireless and infra-red applications respectively

Features:

• PT8A977P/977W works as encoder and PT8A978P/978LW works as decoder • Five pins for five control functions • Operating power-supply voltage: 2.5V to 5.0V (977P, 977W, 978P), 2.0V to 5.0V (978LW) • Auto-power-off if no press on any button in 8s or continuously press on any button over 4 minues • Press on any button as wake up (977P, 977W) • Manual-power-off with OFF button • One output pin used for external power control (977P, 977W) • On-chip oscillator with an external resistor • On-chip reversing amplifiers (978P, 978LW) • Low operating current • Few external components needed • Package: 14-pin DIP, 14-pin SOIC, 16-pin DIP and 16-pin SOIC […]

Part Number: HS8108

Function: Power Supply Switching Mode Controller IC

Package: DIP 28 Pin Type

Manufacturer: HuaXin

Image

Description:

A power supply switching mode controller IC, also known as a power supply controller or SMPS controller, is an integrated circuit designed to control and regulate the operation of a switching mode power supply (SMPS). These ICs are widely used in various power supply applications to achieve efficient power conversion.

The HS8108 is a power supply switching mode controller IC for desktop PCs. It provides all the functions necessary to monitor and control the output of the power supply. Remote ON/OFF control, power good circuitry, some protection features against over-voltage and over-power are implemented.

It directly senses all the output rails for OVP without the need of external dividers. A built-in timer generates accurate timing for control circuit including the PS-off delay. The cycle-by-cycle PWM switching prevents the power transformer from saturation and ensure the fastest response for the short-circuit protection which greatly reduce the stress for power transistors.

Two internal precise 431 shunt regulators provide stable reference voltage and driver for 3.3V and 5V-standby regulation. Utilizing minimum number of external components, the HS8108 includes all of the functions for push-pull and/or half-bridge topology, decreasing the production cost and PCB space,and increasing the MTBF for power supply.

Pinout

Features:

1. PC half-bridge (or 494) power supply supervisor + two 431 + PWM
2. Remote ON/OFF function
3. Power-down warning circuitry ﹠ Power good circuitry
4. Delay time for PSON and PG signal
5. Over-voltage protection for 3.3V, 5V and 12V
6. Under-voltage protection for 3.3V, 5V,12V, -12V and/or -5V
7. Push-pull PWM operation and totem pole outputs
8. Over-power and short-circuit protection
9. Two shunt regulator for 3.3V and 5V Sb
10. Soft-start and maximum 93% duty cycle

Power supply switching mode controller ICs play a critical role in regulating and controlling the operation of SMPSs, enabling efficient and reliable power conversion in various electronic devices and applications.

Controller

8A978P PDF – 5-Function Remote Controller (PT8A978P)

Description

8A978P PDF Datasheet

HS8108 Datasheet – Power Supply Switching Mode Controller IC

HS8108 Datasheet

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