RT8205A RICHTEK [Richtek Technology Corporation], RT8205A Datasheet - Page 16

• Manufacturer Part Number: RT8205A
• Description: High Efficiency, Main Power Supply Controllers for Notebook Computers
• Manufacturer: RICHTEK [Richtek Technology Corporation]

www.richtek.com
16
RT8205A/B/C
Copyright
(20V/Div)
UGATE1
(5V/Div)
LGATE1
(5V/Div)
(5V/Div)
V
CP
OUT1
2.011
2.008
2.005
2.002
1.999
1.996
1.993
1.990
252
250
248
246
244
242
240
©
2012 Richtek Technology Corporation. All rights reserved.
-40 -25 -10
7
Standby Input Current vs. Input Voltage
No Load, EN = V
V
EN = V
No Load, V
ENTRIP1 = ENTRIP2 = 0.91V, SKIPSEL = REF
IN
= 12V, ENTRIP1 = ENTRIP2 = GND,
9
IN
, TONSEL = GND
11
V
IN
REF
5
= 12V, TONSEL = GND, EN = V
IN
13
Temperature (°C)
Time (400μs/Div)
Input Voltage (V)
, ENTRIP1 = ENTRIP2 = GND
20
CP Start Up
vs. Temperature
15
35
50
17
65
19
80
21
95 110 125
IN
23
25
(10V/Div)
ENTRIP1
(10V/Div)
PGOOD
(2V/Div)
Inductor
(2A/Div)
(5V/Div)
(5V/Div)
Current
(5V/Div)
VREG5
VREG3
(5V/Div)
V
REF
EN
OUT1
is a registered trademark of Richtek Technology Corporation.
22
20
18
16
14
12
10
8
Shutdown Input Current vs. Input Voltage
7
No Load, EN = GND, ENTRIP1 = ENTRIP2 = GND
No Load, V
ENTRIP1 = ENTRIP2 = 0.91V
9
11
IN
= 12V, TONSEL = GND, EN = V
No Load, V
EN = V
13
Time (400μs/Div)
V
Time (400μs/Div)
Input Voltage (V)
OUT1
DS8205A/B/C-06 July 2012
Start Up
IN
15
, ENTRIP1 = ENTRIP2 = GND
Start Up
IN
17
= 12V, TONSEL = GND,
19
21
IN
23
25