Texas Instruments TPS92551EVM Evaluation Module TPS92551EVM/NOPB TPS92551EVM/NOPB 데이터 시트
제품 코드
TPS92551EVM/NOPB
1
3
4
5
6
2
7
Exposed Pad
Connect to GND
LED+
LED+
DIM
GND
VREF
IADJ
LED-
SNVS805C – MAY 2012 – REVISED MAY 2013
CONNECTION DIAGRAM
Figure 5. 7-Pin PFM (Top View)
See NDW0007A Package
PIN DESCRIPTIONS
Pin
Numbe
Name
Description
Function
r
1, 2
LED+
Anode of LED string
Supply input and rail connection to the anode of the LED string.
3
DIM
Dimming signal input
Dimming control signal input. Open to enable or apply logic level PWM signal to control
the brightness of the LED string.
the brightness of the LED string.
4
GND
Ground
Reference point for all stated voltages. Connect to the exposed pad of the package
externally.
externally.
5
VREF
Voltage reference
Internal voltage reference output.
6
IADJ
LED current
Fine tunning of the LED current by connecting a resistor between this pin and ground.
adjustment
Connect this pin to ground for factory preset current.
7
LED-
Cathode of LED string The current return pin of the LED string, connect to the cathode of the LED string.
EP
Exposed Pad
Exposed thermal pad
Used to dissipate heat from the package during operation. Must connect to GND directly.
Copyright © 2012–2013, Texas Instruments Incorporated
3
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