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CS3524A, CS3524AF713, CS3524AGDW16

Table of contents:
Info of CS3524A
Info of CS3524AF713
Info of CS3524AGDW16

CS3524A, CS3524AF713, CS3524AGDW16 Selling Leads, Datasheet

MFG:1450 Package Cooled:SOP D/C:07+

CS3524A, CS3524AF713, CS3524AGDW16 Picture

CS3524A, CS3524AF713, CS3524AGDW16 Datasheet download

Five Points

Part Number: CS3524A

MFG: 1450

Package Cooled: SOP

D/C: 07+

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CS3524A General Description

The CS3524A PWM control circuit retains the same versatile architecture of the industry standard CS3524 (SG3524) while adding substantial improvements.

The CS3524 is pin-compatible with "non-A" versions, and in most applications can be directly interchanged. The CS3524A, however, eliminates many of the design restrictions which had previously required additional external circuitry.

The CS3524A includes a precision 5V reference trimmed to ±1% accuracy (eliminating the need for potentiometer adjustments), an error amplifier with an output voltage swing extending to 5V, and a current sense amplifier useful in either the ground or power supply output lines. The uncommitted 60V, 200mA NPN output pair greatly enhances the output drive capability.

The CS3524A features an undervoltage lockout circuit which disables all internal circuitry (except the reference) until the input voltage has risen to 8V. This holds standby current low until turnon, and greatly simplifies the design of low power, off-line supplies. The turnon circuit has approximately 600mV of hysteresis for jitter free activation.

Other improvements include a PWM latch that insures freedom from multiple pulsing within a period, even in noisy environments; logic to eliminate double pulsing on a single output, a 200ns external shutdown capability, and automatic thermal protection from
excessive chip temperature. The oscillator circuit is usable to 500kHz and is easier to synchronize with an external clock pulse.

CS3524A Maximum Ratings

Supply Voltage (VIN) ................................................................................................................................40V
Collector Supply Voltage (VCC) ................................................................................................................60V
Output Current (Each Output)..............................................................................................................200mA
Reference Output Current......................................................................................................................50mA
Oscillator Charging Current .....................................................................................................................5mA
Power Dissipation at TA=25°C.........................................................................................................1000mW
Power Dissipation at TJ=+25°C........................................................................................................2000mW
Derate for Case Temperature above +25°C..................................................................................16mW/°C
Storage Temperature Range .............................................................................................-65°C to +150°C
Lead Temperature Soldering: Wave Solder (through hole styles only)...................10 sec. max, 260°C peak
Reflow (SMD styles only) .................................................................60 sec. max above 183°C, 230°C peak

CS3524A Features

·Precision Reference Iternally Trimmed to ±1%
·Current Limit
·Undervoltage Lockout
·Start-up Supply Current <4mA
·Output to 200mA
·60V Output Capability
·Wide Common-mode Input Range for Error and Current Limit Amplifiers
·PWM Latch Insures Single Pulse per Period
·Double Pulse Suppression
·200ns Shutdown
·Guaranteed Frequency
·Thermal Shutdown

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