SG3525AN microwave integrated circuits Regulating Pulse Width Modulators
chip in electronics
,integrated components
SG3525AN microwave integrated circuits Regulating Pulse Width Modulators
The SG3525A, SG3527A pulse width modulator control circuits offer improved performance and lower external parts count when implemented for controlling all types of switching power supplies. The on–chip +5.1 V reference is trimmed to ±1% and the error amplifier has an input common–mode voltage range that includes the reference voltage, thus eliminating the need for external divider resistors. A sync input to the oscillator enables multiple units to be slaved or a single unit to be synchronized to an external system clock. A wide range of deadtime can be programmed by a single resistor connected between the CT and Discharge pins. These devices also feature built–in soft–start circuitry, requiring only an external timing capacitor. A shutdown pin 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 under voltage lockout inhibits the outputs and the changing of the soft–start capacitor when VCC is below nominal. The output stages are totem–pole design capable of sinking and sourcing in excess of 200 mA. The output stage of the SG3525A features NOR logic resulting in a low output for an off–state while the SG3527A utilized OR logic which gives a high output when off.
• 8.0 V to 35 V Operation
• 5.1 V ± 1.0% Trimmed Reference
• 100 Hz to 400 kHz Oscillator Range
• Separate Oscillator Sync Pin
• Adjustable Deadtime Control
• Input Undervoltage Lockout
• Latching PWM to Prevent Multiple Pulses
• Pulse–by–Pulse Shutdown
• Dual Source/Sink Outputs: ±400 mA Peak
MAXIMUM RATINGS (Note 1)
| Rating | Symbol | Value | Unit |
| Supply Voltage | VCC | +40 | Vdc |
| Collector Supply Voltage | VC | +40 | Vdc |
| Logic Inputs | –0.3 to +5.5 | V | |
| Analog Inputs | –0.3 to VCC | V | |
| Output Current, Source or Sink | IO | ±500 | mA |
| Reference Output Current | Iref | 50 | mA |
| Oscillator Charging Current | 5.0 | mA | |
|
Power Dissipation (Plastic & Ceramic Package) TA = +25°C (Note 2) TC = +25°C (Note 3) |
PD |
1000 2000 |
mW |
| Thermal Resistance Junction–to–Air | RθJA | 100 | °C/W |
| Thermal Resistance Junction–to–Case | RθJC | 60 | °C/W |
| Operating Junction Temperature | TJ | +150 | °C |
| Storage Temperature Range | Tstg | –55 to +125 | °C |
| Lead Temperature (Soldering, 10 seconds) | TSolder | +300 | °C |
NOTES:
1. Values beyond which damage may occur.
2. Derate at 10 mW/°C for ambient temperatures above +50°C.
3. Derate at 16 mW/°C for case temperatures above +25°C.
Representative Block Diagram
Stock Offer (Hot Sell)
| Part NO. | Q'ty | MFG | D/C | Package |
| LMC7660IMX | 3871 | NSC | 14+ | SOP-8 |
| MR25H10CDC | 6232 | EVS | 16+ | DFN |
| NCP1117ST33T3G | 10000 | ON | 16+ | SOT-223 |
| OP07CDR | 38000 | TI | 16+ | SOP-8 |
| OP290EZ | 6140 | AD | 14+ | DIP |
| MBRF1045CT-U/P | 10000 | KEC | 16+ | TO-220 |
| MC14599BCP | 9470 | MOT | 14+ | DIP |
| M48Z35Y-70PC1 | 3516 | ST | 16+ | DIP |
| 40005* | 1651 | BOSCH | 14+ | QFP64 |
| OPA320AIDBVR | 7340 | TI | 16+ | SOT23-5 |
| ME2206M6G | 30000 | ME | 16+ | SOT23-6 |
| LM78L05ACMX | 6088 | NSC | 14+ | SOP-8 |
| M48T12-70PC1 | 3568 | ST | 14+ | DIP |
| Z8S18010VSC | 500 | ZILOG | 02+ | PLCC68 |
| MC33275ST-3.3T3G | 10000 | ON | 16+ | SOT |
| MC34063EBD | 30000 | ST | 16+ | SOP |
| MC33275ST-5.0T3G | 6764 | ON | 10+ | SOT |
| ZTL431AFFTA | 3000 | ZETEX | 15+ | SOT23 |
| MC9S08AW60CFUE | 4558 | FREESCALE | 15+ | QFP |
| PM6680TR | 4500 | STM | 08+ | QFN-32 |
| PIC16F877-04/P | 4868 | MICROCHIP | 15+ | DIP |
W25N01GVZEIG SLC Nand Flash Memory IC 3V 1G BIT Winbond TW SPI
PF48F4400P0VBQEK NEW AND ORIGINAL STOCK
DSPIC30F3011-30I/PT Flash Memory IC NEW AND ORIGINAL STOCK
IR2110PBF NEW AND ORIGINAL STOCK
S25FL032P0XMFI010 SOP8 104MHz Flash Memory IC Chip
W25Q80DVSNIG Serial Flash Chip 3V 8M BIT Dual Quad Spi Memory Integrated Circuit
MOS Tube Field Effect Single-Chip Drive PWM Controlador Module IRF520
MAX485, RS485 Module TTL To RS-485 Module TTL To 485
SKY65336-11 NEW AND ORIGINAL STOCK
| Image | Part # | Description | |
|---|---|---|---|
|
|
W25N01GVZEIG SLC Nand Flash Memory IC 3V 1G BIT Winbond TW SPI |
FLASH - NAND (SLC) Memory IC 1Gbit SPI - Quad I/O 104 MHz 7 ns 8-WSON (8x6)
|
|
|
|
PF48F4400P0VBQEK NEW AND ORIGINAL STOCK |
FLASH - NOR (MLC) Memory IC 512Mbit CFI 52 MHz 110 ns 64-LBGA (11x13)
|
|
|
|
DSPIC30F3011-30I/PT Flash Memory IC NEW AND ORIGINAL STOCK |
dsPIC dsPIC™ 30F Microcontroller IC 16-Bit 30 MIPs 24KB (8K x 24) FLASH 44-TQFP (10x10)
|
|
|
|
IR2110PBF NEW AND ORIGINAL STOCK |
Half-Bridge Gate Driver IC Non-Inverting 14-DIP
|
|
|
|
S25FL032P0XMFI010 SOP8 104MHz Flash Memory IC Chip |
FLASH - NOR Memory IC 32Mbit SPI - Quad I/O 104 MHz 8-SOIC
|
|
|
|
W25Q80DVSNIG Serial Flash Chip 3V 8M BIT Dual Quad Spi Memory Integrated Circuit |
FLASH - NOR Memory IC 8Mbit SPI - Quad I/O 104 MHz 8-SOIC
|
|
|
|
MOS Tube Field Effect Single-Chip Drive PWM Controlador Module IRF520 |
N-Channel 100 V 9.2A (Tc) 60W (Tc) Through Hole TO-220AB
|
|
|
|
MAX485, RS485 Module TTL To RS-485 Module TTL To 485 |
1/1 Transceiver Half RS422, RS485 8-uMAX/uSOP
|
|
|
|
SKY65336-11 NEW AND ORIGINAL STOCK |
RF Front End 2.4GHz ISM 28-MCM (8x8)
|