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TEXAS INSTRUMENTS UC3845N
Controller PWM, 25V-12V supply, 450 kHz, 13.5V/1A out, DIP-8
- Manufacturer:
- TEXAS INSTRUMENTS TEXAS INSTRUMENTS
- Manufacturer Part No:
- UC3845N
- Order Code:
- 3123562
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- Product Range
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- ECAD / MCAD
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Product Overview
The UC3845N is a Current Mode PWM Controller optimized for off-line and DC to DC converters. This device 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 under-voltage lockout featuring start up current less than 1mA, 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 off state.
- Optimized for off-line and DC to DC converters
- Low start up current (
1mA) - Automatic feed forward compensation
- Pulse-by-pulse current limiting
- Enhanced load response characteristics
- Under-voltage lockout with hysteresis
- Double pulse suppression
- High current totem pole output
- Internally trimmed bandgap reference
- Green product and no Sb/Br
Applications
Power Management
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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- 12V
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- 25V
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- DIP
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- 8Pins
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- Through Hole
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- -
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- -
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- 500kHz
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- 0%
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- 50%
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- Flyback, Forward
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- 0°C
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- 70°C
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- -
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- -
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Technical Documents (1)
254 In stock Need more?
254 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 9/29/25
254 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
¥196.64
(¥216.30 Inc. JCT)
Pricing is unavailable. Please contact customer services.
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| Quantity | Price (Incl JCT) |
|---|---|
| 1+ | ¥196.64 (¥216.30) |
| 10+ | ¥121.29 (¥133.42) |
| 50+ | ¥117.91 (¥129.70) |
| 100+ | ¥114.53 (¥125.98) |
| 250+ | ¥107.48 (¥118.23) |
| 500+ | ¥103.27 (¥113.60) |
| 1000+ | ¥96.07 (¥105.68) |
| 2500+ | ¥93.82 (¥103.20) |
| Quantity | Price (Incl JCT) |
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