RT8223P
Shutdown Input Current vs. Input Voltage
Standby Input Current vs. Input Voltage
22
21
20
19
18
17
16
15
14
13
12
11
10
9
250
249
248
247
246
245
244
243
242
241
240
No Load,
EN = FLOATING, VENTRIP1 = VENTRIP2 = 5V
No Load, EN = GND, VENTRIP1 = VENTRIP2 = 5V
8
7
8
9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
Input Voltage (V)
7
8
9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
Input Voltage (V)
Reference Voltage vs. Temperature
VREG5, VREG3 and REF Start Up
2.011
2.008
2.005
2.002
1.999
1.996
1.993
1.990
1.987
1.984
VREG5
(5V/Div)
VREG3
(2V/Div)
REF
(2V/Div)
EN
(2V/Div)
No Load, VIN = 12V, TONSEL = GND,
EN = FLOATING, VENTRIP1 = VENTRIP2 = 5V
VIN = 12V, VENTRIP1 = VENTRIP2 = 5V,
EN= FLOATING, TONSEL= GND
-50
-25
0
25
50
75
100
125
Time (400μs/Div)
Temperature ( C)
°
Power On From ENC
Power Off From ENC
No Load
No Load
VOUT1
(5V/Div)
VOUT2
VOUT1
(5V/Div)
VOUT2
(2V/Div)
(2V/Div)
PGOOD
(5V/Div)
PGOOD
(5V/Div)
VIN = 12V, TONSEL = GND,
SKIPSEL= REF, EN= FLOATING,
ENC
(5V/Div)
ENC
(5V/Div)
VIN = 12V, TONSEL = GND,
SKIPSEL= REF, EN= FLOATING,
VENTRIP1 = VENTRIP2 = 1.5V, VENC = 5V
VENTRIP1 = VENTRIP2 = 1.5V, VENC = 5V
Time (4ms/Div)
Time (1ms/Div)
DS8223P-01 June 2011
www.richtek.com
13
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
