U35080A, U351M, U3525 Selling Leads, Datasheet
MFG:UTC Package Cooled:TSSOP8 D/C:08+
U35080A, U351M, U3525 Datasheet download
Part Number: U35080A
MFG: UTC
Package Cooled: TSSOP8
D/C: 08+
U35080A, U351M, U3525
- Table of contents:
Info of U35080A
Info of U351M
Info of U3525
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About U3500BM-BFL
PDF/DataSheet Download
Datasheet: U3500BM-BFL
File Size: 236285 KB
Manufacturer: TEMIC Semiconductors
Download : Click here to Download
About U3500BM-BFL
PDF/DataSheet Download
Datasheet: U3500BM-BFL
File Size: 236285 KB
Manufacturer: TEMIC Semiconductors
Download : Click here to Download
About U3500BM-BFL
PDF/DataSheet Download
Datasheet: U3500BM-BFL
File Size: 236285 KB
Manufacturer: TEMIC Semiconductors
Download : Click here to Download
U3525 General Description
The UTC U3525 is a pulse width modulator IC and designed for switching power supplies application to improve performance and reduce external parts usage.
A shutdown terminal controls both the soft-start circuitry 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. The output stage features NOR logic, giving a LOW output for an OFF state. An under-voltage lockout circuitry, which keeps the outputs off and the soft-start capacitor discharged for sub-normal input voltages, includes approximately 500 mV of hysteresis for jitter free operation. The PWM circuits also feature a latch following the comparator. When a PWM pulses has been terminated, 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 200mA.
U3525 Maximum Ratings
| PARAMETER | SYMBOL | RATINGS | UNIT |
| Supply Voltage | ViN | 40 | V |
| Collector Supply Voltage | VC | 40 | V |
| Oscillator Charging Current | IOSC | 5 | mA |
| Output Current, Source or Sink | Io | 500 | mA |
| Reference Output Current | IR | 50 | mA |
| Current through CT Terminal Logic Inputs Analog Inputs |
IT | 5 - 0.3 ~ + 5.5 -0.3 ~ Vi |
mA V V |
| Total Power Dissipation at Ta=70 | PD | 1000 | mW |
| Junction Temperature | TJ | -55 ~ +125 | |
| Operating Ambient Temperature | TORP | 0 ~ +70 | |
| Storage Temperature | TSTG | -65 ~ +150 |
Absolute maximum ratings are stress ratings only and functional device operation is not implied.
U3525 Features
· Input Voltage: 8~35V
· On-chip +5.1V reference is trimmed to ±1%
· 100HZ ~ 500KHZ oscillator range
· Separate oscillator sync terminal
· Adjustable dead time control
· Internal soft-start
· Pulse-by-pulse shutdown
· Input under-voltage lockout with hysteresis
· Latching PWM to prevent multiple pulses
· Dual source/sink output drivers
· On-chip +5.1V reference is trimmed to ±1%
· 100HZ ~ 500KHZ oscillator range
· Separate oscillator sync terminal
· Adjustable dead time control
· Internal soft-start
· Pulse-by-pulse shutdown
· Input under-voltage lockout with hysteresis
· Latching PWM to prevent multiple pulses
· Dual source/sink output drivers
U3525 Connection Diagram
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