SNVS450F September 2006 – October 2015 LM3402 , LM3402HV
PRODUCTION DATA.
- 1 Features
- 2 Applications
- 3 Description
- 4 Revision History
- 5 Pin Configuration and Functions
- 6 Specifications
- 7 Detailed Description
-
8 Application and Implementation
- 8.1 Application Information
- 8.2 Typical Application
- 9 Power Supply Recommendations
- 10Layout
- 11Device and Documentation Support
- 12Mechanical, Packaging, and Orderable Information
封裝選項(xiàng)
機(jī)械數(shù)據(jù) (封裝 | 引腳)
散熱焊盤機(jī)械數(shù)據(jù) (封裝 | 引腳)
- DDA|8
訂購(gòu)信息
5 Pin Configuration and Functions
DGK Package
8-Pin VSSOP
Top View
DDA Package
8-Pin HSOP
Top View
Pin Functions
| PIN | I/O | DESCRIPTION | |
|---|---|---|---|
| NO. | NAME | ||
| 1 | SW | O | Switch pin. Connect this pin to the output inductor and Schottky diode. |
| 2 | BOOT | O | MOSFET drive bootstrap pin. Connect a 10-nF ceramic capacitor from this pin to SW. |
| 3 | DIM | I | Input for PWM dimming. Connect a logic-level PWM signal to this pin to enable and disable the power MOSFET and reduce the average light output of the LED array. |
| 4 | GND | — | Ground pin. Connect this pin to system ground. |
| 5 | CS | I | Current sense feedback pin. Set the current through the LED array by connecting a resistor from this pin to ground. |
| 6 | RON | I | ON-time control pin. A resistor connected from this pin to VIN sets the regulator controlled ON-time. |
| 7 | VCC | O | Output of the internal 7-V linear regulator. Bypass this pin to ground with a minimum 0.1-µF ceramic capacitor with X5R or X7R dielectric. |
| 8 | VIN | I | Input voltage pin. Nominal operating input range for this pin is 6 V to 42 V (LM3402) or 6 V to 75 V (LM3402HV). |
| DAP | — | Thermal Pad. Connect to ground. Place 4-6 vias from DAP to bottom layer ground plane. | |