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3.13 EL DRIVER IC (D381B, KEY PCB U202)
EL_KEY_BACKLIGHT
EL DRIVER IC
U202
1
CHF
2
R214
CLF
3
E
4
68K
GND
C224
C225
47p
6800p
LOW
EL OFF
HIGH
EL ON
Figure 3-30. KEY BACK LIGHT, OLED
- 49 -
3. TECHNICAL BRIEF
VBAT
C223
EL PAD
1u
D381B
8
V+
7
N_CLE
L+
6
VOUT
5
L-
L201
820uH
C226
2200p
1608
ZD201
KDZ100VW
R215
33
2012 1/4W
N_ALE
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