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ANALOG DEVICES LT1952IGN-1#PBF
PWM Controller, Single Switch, 6.5 to 25 V Supply, 2.5 V/200 mA Out, -40 to 125 °C, NSSOP-16
- Manufacturer:
- ANALOG DEVICES ANALOG DEVICES
- Manufacturer Part No:
- LT1952IGN-1#PBF
- Order Code:
- 4026069
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- Product Range
- -
- Technical Datasheet:
- LT1952IGN-1#PBF Datasheet
- ECAD / MCAD
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Product Overview
LT1952-1 is a current mode PWM controller optimized to control the forward converter topology, using one primary MOSFET. It provide synchronous rectifier control, resulting in extremely high efficiency. A programmable Volt-Second clamp provides a safeguard for transformer reset that prevents saturation. This allows a single MOSFET on the primary side to reliably run at greater than 50% duty cycle for high MOSFET, transformer and rectifier utilization. The devices include soft-start for controlled exit from shutdown and undervoltage lockout. A precision 107mV current limit threshold, independent of duty cycle, combines with soft start to provide hiccup short-circuit protection. Programmable slope compensation and leading edge blanking allow optimization of loop bandwidth with a wide range of inductors and MOSFETs. It is used in application such as telecommunications power supplies, industrial and distributed power, isolated and non isolated DC/DC converters etc.
- Synchronous rectifier control for high efficiency
- Programmable volt-second clamp, current mode control
- Output power levels from 25W to 500W, low current start-up
- True PWM soft-start, low stress short-circuit protection
- Adjustable delay for synchronous timing, accurate shutdown threshold with programmable hysteresis
- Programmable slope compensation, programmable leading edge blanking
- Synchronizable to an external clock upto 1.5fOSC
- Internal 1.23V reference, 2.5V external reference
- Frequency (oscillator) is 200KHz typical at (ROSC = 178k, FB = 1V, SS-MAXDC = 1.84V)
- Operating temperature is -40°C to +125°C, package style is 16-lead plastic SSOP
Footnotes
ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party
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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- 6.5V
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- 25V
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- NSSOP
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- 16Pins
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- Surface Mount
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- 200kHz
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- 165kHz
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- 240kHz
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- -
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- 90%
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- Forward
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- -40°C
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- 125°C
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- -
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- -
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- MSL 1 - Unlimited
Technical Documents (2)
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185 deliver in 3-4 business days from our UK warehouse
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¥1,993.86
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¥2,193.25
Inc. JCT)
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| 1+ | ¥1,993.86 (¥2,193.25) | ( ) |
| 10+ | ¥1,282.22 (¥1,410.44) | ( ) |
| 25+ | ¥1,202.12 (¥1,322.33) | ( ) |
| 100+ | ¥1,122.01 (¥1,234.21) | ( ) |
| 300+ | ¥1,025.15 (¥1,127.67) | ( ) |
| 500+ | ¥1,006.52 (¥1,107.17) | ( ) |
| 1000+ | ¥987.89 (¥1,086.68) | ( ) |
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