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STMICROELECTRONICS UC3845BD1013TR
PWM CONTROLLER, 500KHZ, 0 TO 70DEG C
- Manufacturer:
- STMICROELECTRONICS STMICROELECTRONICS
- Manufacturer Part No:
- UC3845BD1013TR
- Order Code:
- 3129885
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- Product Range
- -
- Technical Datasheet:
- UC3845BD1013TR Datasheet
- ECAD / MCAD
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Product Overview
UC3845BD1013TR is a high performance current mode PWM controller. This control IC provides the necessary features to implement off-line or DC to DC fixed frequency current mode control schemes with a minimal external parts count. Internally implemented circuits include a trimmed oscillator for precise DUTY CYCLE CONTROL under voltage lockout featuring start-up current less than 0.5mA, a precision reference trimmed for accuracy at the error amp input, logic to insure latched operation, a PWM comparator which also provides current limit control, and a totem pole output stage designed to source or sink high peak current. The output stage, suitable for driving N-Channel MOSFETs, is low in the offstate. This device has UVLO thresholds of 10V (off), ideally suited off-line applications.
- Trimmed oscillator for precise frequency control, undervoltage lockout with hysteresis
- Oscillator frequency guaranteed at 250Khz, current mode operation to 500Khz
- Automatic feed forward compensation, high current totem pole output
- Latching pwm for cycle-by-cycle current limiting, low start-up and operating current
- Internally trimmed reference with undervoltage lockout
- Output noise voltage is 50µV typical at (10Hz ≤ f ≤ 10Khz Tj = 25°C)
- 52Khz typical frequency, 2.50V input voltage
- Input bias current is -0.1µA typical at (VFB = 5V)
- Unity gain bandwidth is 1Mhz typical at (TJ = 25°C)
- Junction operating temperature range from -40°C to 150°C, SO8 package
Warnings
Market demand for this product has caused an extension in leadtimes. Delivery dates may fluctuate. Product exempt from discounts.
Product Information
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- Single Ended Controller
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- 1Channels
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- Current Mode Control
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- SOIC
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- 8Pins
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- Surface Mount
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- 52kHz
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- -
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- 0%
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- 50%
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- Boost, Flyback
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- 0°C
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- 70°C
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- -
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- -
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- MSL 3 - 168 hours
Technical Documents (2)
Packaging type
Cut Tape
7,576 In stock Need more?
7,576 deliver in 3-4 business days from our UK warehouse :(UK stock) Order before 17:00 Mon-Fri (excluding National Holidays)
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Extra stock is available upon order to the Supplier Lead Time which is approximately 10/27/25
7,576 deliver in 3-4 business days from our UK warehouse
Due to market conditions delivery times are for general guidance only and may be subject to change at short notice
¥70.25
(¥77.28 Inc. JCT)
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- Price for:
- Each (Supplied on Cut Tape)
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| Quantity | Price (Incl JCT) |
|---|---|
| 5+ | ¥70.25 (¥77.28) |
| 50+ | ¥64.24 (¥70.66) |
| 100+ | ¥58.23 (¥64.05) |
| 500+ | ¥55.80 (¥61.38) |
| 1000+ | ¥54.32 (¥59.75) |
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