RT8259 RICHTEK [Richtek Technology Corporation], RT8259 Datasheet - Page 6

• Manufacturer Part Number: RT8259
• Description: 1.2A, 24V, 1.4MHz Step-Down Converter
• Manufacturer: RICHTEK [Richtek Technology Corporation]

(500mA/Div)
RT8259
www.richtek.com
6
(50mV/Div)
(5mV/Div)
(10V/Div)
I
V
V
(1A/Div)
OUT
V
PHASE
OUT
OUT
I
L
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
4
V
IN
Quiescent Current vs. Input Voltage
= 12V, V
6.5
Load Transient Response
9
OUT
V
Time (250ns/Div)
Input Voltage (V)
= 3.3V, I
Time (50μs/Div)
IN
11.5
Switching
= 12V, V
14
OUT
OUT
= 0.6A to 1.2A
16.5
V
= 3.3V, I
EN
= 2V, V
19
OUT
FB
21.5
= 1.2A
= 1V
24
(500mA/Div)
(50mV/Div)
(5mV/Div)
(10V/Div)
V
I
(1A/Div)
V
OUT
V
PHASE
OUT
OUT
I
L
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
-50
V
IN
Quiescent Current vs. Temperature
= 12V, V
-25
Load Transient Response
OUT
0
V
Temperature (°C)
Time (250ns/Div)
= 3.3V, I
Time (50μs/Div)
IN
Switching
= 20V, V
25
DS8259-03 March 2011
OUT
OUT
50
= 0A to 1.2A
V
= 3.3V, I
EN
75
= 2V, V
OUT
V
V
IN
IN
100
FB
= 1.2A
= 12V
= 24V
= 1V
125