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Part Number: LT3493
Description: The LT®3493 is a current mode PWM step-down DC/DC converter with an internal 1.75A powe...
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LT3493
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DataSheet
General Description
LT3493 General Description
The LT®3493 is a current mode PWM step-down DC/DC converter with an internal 1.75A power switch. The wide operating input range of 3.6V to 36V (40V maximum) makes the LT3493 ideal for regulating power from a wide variety of sources, including unregulated wall transformers, 24V industrial supplies and automotive batteries. Its high operating frequency allows the use of tiny, low cost inductors and ceramic capacitors, resulting in low, predictable output ripple.
Cycle-by-cycle current limit provides protection against shorted outputs and soft-start eliminates input current surge during start-up. The low current (<2A) shutdown mode provides output disconnect, enabling easy power management in battery-powered systems.
LT3493 Maximum Ratings
Input Voltage (VIN) ...........................................40V
BOOST Pin Voltage ............................................50V
BOOST Pin Above SW Pin ..................................25V
SHDN Pin ..........................................................40V
FB Voltage ..........................................................6V
Operating Temperature Range (Note 2)
LT3493E ....................................... 40 to 85
LT3493I ...................................... 40 to 125
Maximum Junction Temperature .................... 125
Storage Temperature Range .......... 65 to 150
BOOST Pin Voltage ............................................50V
BOOST Pin Above SW Pin ..................................25V
SHDN Pin ..........................................................40V
FB Voltage ..........................................................6V
Operating Temperature Range (Note 2)
LT3493E ....................................... 40 to 85
LT3493I ...................................... 40 to 125
Maximum Junction Temperature .................... 125
Storage Temperature Range .......... 65 to 150
LT3493 Features
` Wide Input Range: 3.6V to 36V Operating, 40V Maximum
` 1.2A Output Current
` Fixed Frequency Operation: 750kHz
` Output Adjustable Down to 780mV
` Short-Circuit Robust
` Uses Tiny Capacitors and Inductors
` Soft-Start
` Internally Compensated
` Low Shutdown Current: <2A
` Low VCESAT Switch: 330mV at 1A
` Thermally Enhanced, Low Profi le DFN Package
` 1.2A Output Current
` Fixed Frequency Operation: 750kHz
` Output Adjustable Down to 780mV
` Short-Circuit Robust
` Uses Tiny Capacitors and Inductors
` Soft-Start
` Internally Compensated
` Low Shutdown Current: <2A
` Low VCESAT Switch: 330mV at 1A
` Thermally Enhanced, Low Profi le DFN Package
LT3493 Typical Application
· Automotive Battery Regulation
· Industrial Control Supplies
· Wall Transformer Regulation
· Distributed Supply Regulation
· Battery-Powered Equipment
· Industrial Control Supplies
· Wall Transformer Regulation
· Distributed Supply Regulation
· Battery-Powered Equipment
LT3493 Connection Diagram
LT30030-2
PDF/DataSheet Download
- Datasheet: LT30030-2
- File Size: 538993 KB
- Manufacturer: LITTELFUSE [Littelfuse]
- Click here to Download
- ·LT30030-3
- LITTELFUSE [Littelfuse]
- Class T Fuse Blocks - 300 and 600 Volt
- 538993 KB
- ·LT30060-2
- LITTELFUSE [Littelfuse]
- Class T Fuse Blocks - 300 and 600 Volt
- 538993 KB
- ·LT30060-3
- LITTELFUSE [Littelfuse]
- Class T Fuse Blocks - 300 and 600 Volt
- 538993 KB
- ·LT30060-4
- LITTELFUSE [Littelfuse]
- Class T Fuse Blocks - 300 and 600 Volt
- 538993 KB
- ·LT3010
- LINER [Linear Technology]
- High Voltage, Current Mode Switching Regulator Controller
- 249903 KB
- ·LT30100-1
- LITTELFUSE [Littelfuse]
- Class T Fuse Blocks - 300 and 600 Volt
- 538993 KB
- ·LT30100-2
- LITTELFUSE [Littelfuse]
- Class T Fuse Blocks - 300 and 600 Volt
- 538993 KB
- ·LT30100-3
- LITTELFUSE [Littelfuse]
- Class T Fuse Blocks - 300 and 600 Volt
- 538993 KB
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Technical Information, IGBT-Modules, eupec GmbH, 1600V, 40A
