參數(shù)資料
型號: SC624EVB
廠商: Semtech Corporation
英文描述: LED Light Management Unit Charge Pump, 4 LEDs, Dual LDOs, and SemWireTM Interface
中文描述: LED燈管理股電荷泵,4個LED,雙LDO和SemWireTM接口
文件頁數(shù): 10/22頁
文件大小: 301K
代理商: SC624EVB
SC624
10
Pin Descriptions
Pin #
Pin Name
Pin Function
1
C2-
Negative connection to bucket capacitor 2 — requires a 1μF capacitor connected to C2+
2
PGND
Ground pin for high current charge pump
3
NC
Unused pin — do not terminate
4
BL1
Current sink output for main backlight LED 1
leave this pin open if unused
5
BL2
Current sink output for main backlight LED 2
leave this pin open if unused
6
BL3
Current sink output for main backlight LED 3
leave this pin open if unused
7
BL4
Current sink output for main backlight LED 4
leave this pin open if unused
8
AGND
Analog ground pin
connect to ground and separate from PGND current
9
GREF
Ground reference
connect to ground
10
NC
Unused pin — do not terminate
11
SWIF
SemWire single wire interface pin — used to enable/disable the device and to
set up all internal registers (refer to Register Map and SemWire Interface sections)
12
NC
Unused pin — do not terminate
13
BYP
Bypass pin for voltage reference — connect with a 22nF capacitor to AGND
14
LDO2
Output of LDO2
connect with a 1μF capacitor to AGND
15
LDO1
Output of LDO1 — connect with a 1μF capacitor to AGND
16
VOUT
Charge pump output — all LED anode pins should be connected to this
pin — requires a 2.2μF capacitor to PGND
17
C2+
Positive connection to bucket capacitor 2 — requires a 1μF capacitor connected to C2-
18
C1+
Positive connection to bucket capacitor 1 — requires a 1μF capacitor connected to C1-
19
VIN
Battery voltage input
connect with a 1μF capacitor to PGND
20
C1-
Negative connection to bucket capacitor 1 — requires a 1μF capacitor connected to C1+
T
THERMAL PAD
Thermal pad for heatsinking purposes
connect to ground plane using multiple
vias
not connected internally
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