SG2525AN AC-DC Converters by STMicroelectronics

Voltage Mode PWM


The SG3525A series of pulse width modulator integrated circuits are designed to offer improved performance and lowered external parts count when used in designing all types of switching power supplies. The on-chip + 5.1 V reference is trimmed to ±1 % and the input common-mode range of the error amplifier includes the reference voltage eliminating external resistors. A sync input to the oscillator allows multiple units to be slaved or a single unit to be synchronized to an external system clock. A single resistor between the C T and the discharge terminals provide a wide range of dead time ad- justment.These devices also feature built-in soft-start circuitry with only an external timing capacitor required. A shutdown terminal controls both the soft-start circuity and the output stages, providing instantaneous turn off through the PWM latch with pulsed shutdown,as well as soft-start recycle with longer shutdown commands. These functions are also controlled by an undervoltage lockout which keeps the outputs off and the soft-start capacitor discharged for sub-normal input voltages. This lockout circuitry includes approximately 500 mV of hysteresis for jitter-free operation. Another feature of these PWM circuits is a latch following the comparator. Once a PWM pulses has been terminated for any reason,the outputs will remain off for the duration of the period. The latch is reset with each clock pulse. The output stages are totem-pole designs capable of sourcing or sinking in excess of 200 mA. The SG3525A output stage features NOR logic, giving a LOW output for an OFF state.

Where to Buy

Prices starting from US$0.80

Distributor Stock
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Farnell
from US$1.37
No stock
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Newark Electronics
from US$1.06
184
in stock
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Future Electronics
from US$0.80
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element14
from US$0.95
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Avnet America
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EBV Elektronik
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Avnet Silica
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Features

DUAL SOURCE/SINK OUTPUT DRIVERS
LATCHING PWM TO PREVENT MULTIPLE PULSES
PULSE-BY-PULSE SHUTDOWN
INTERNAL SOFT-START
8 TO 35 V OPERATION
100 Hz TO 500 KHz OSCILLATOR RANGE
5.1 V REFERENCE TRIMMED TO ± 1 %
ADJUSTABLE DEADTIME CONTROL
INPUT UNDERVOLTAGE LOCKOUT WITH HYSTERESIS
SEPARATE OSCILLATOR SYNC TERMINAL

Alternative Descriptions

Pwm Controller, 500Khz, 35V, Dip-16 | Newark Electronics
SG2525A Series 35 V 20 mA PWM Regulating Pulse Width Modulator - DIP-16 | Future Electronics
PWM CONTROLLER, 500KHZ, 35V, DIP-16 | element14
Voltage Mode PWM Controller 400mA 16-Pin PDIP Tube | Avnet America


Frequently Asked Questions

Where can I find additional details, specifications and documents for a SG2525AN?

Additional datasheets, footprints and schematics for SG2525AN are listed on our Part Details page. You can also find images and similar parts to SG2525AN on this page.

What pricing and inventory information can I view?

Distributor pricing and stock information is available for SG2525AN on our Product Comparison page. Access via the 'View Pricing & Stock' button to view SG2525AN price breaks, MOQs, lead times, inventory and SKUs from distributors.

What category does SG2525AN fall under?

The SG2525AN is listed under Power Management > AC-DC Converters > PWM Controllers.

Can I view similar or alternative parts?

You can view similar parts to SG2525AN when available in the PWM Controllers range under the specifications section at the bottom of the details page.

Who can I contact for technical support of the product?

Submit any questions directly to the customer support team of the distributor listing the product. For the SG2525AN you can contact the distributor directly for product support, shipping queries etc.

Is the SG2525AN RoHS compliant?

Yes. This part has been flagged as RoHS Compliant by STMicroelectronics.

Which authorised distributors for SG2525AN have stock available?

Authorised distributors including Newark Electronics, Future Electronics, element14, Farnell and Avnet America have stock available or on a lead time for SG2525AN.

How do I check stock and lead times for all distributors?

Stock availability and lead times will be displayed for SG2525AN often in real-time on the comparison pages.

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