RT9511 RICHTEK [Richtek Technology Corporation], RT9511 Datasheet - Page 12

• Manufacturer Part Number: RT9511
• Description: Fully Integrated Battery Charger with Two Step-Down Converters
• Manufacturer: RICHTEK [Richtek Technology Corporation]

RT9511
Step-Down Converter
www.richtek.com
12
1.25
1.24
1.23
1.22
1.21
1.20
1.19
1.18
1.17
1.16
1.15
100
1.6
1.5
1.4
1.3
1.2
1.1
1.0
0.9
0.8
0.7
0.6
0.5
0.4
90
80
70
60
50
40
30
20
10
0
0.001
-50
2.5
2.8
Output Voltage vs. Temperature
EN Threshold vs. Input Voltage
-25
Efficiency vs. Output Current
3.1
0
3.4
0.01
V
Output Current (A)
Temperature (°C)
Input Voltage (V)
OUT
V
V
IN
IN
3.7
25
= 1.2V,
= 3.6V
= 5V
4
Rising
Falling
50
C
V
4.3
OUT
V
OUT
IN
0.1
= 3.6V,
= 1.2V,
= 10μF,
4.6
75
4.9
I
I
OUT
L
OUT
100
= 2.2H
5.2
= 0A
= 0A
125
5.5
1
1.220
1.218
1.216
1.214
1.212
1.210
1.208
1.206
1.204
1.202
1.200
2.1
2.0
1.9
1.8
1.7
1.6
1.5
1.4
1.3
1.6
1.5
1.4
1.3
1.2
1.1
1.0
0.9
0.8
0.7
0.6
0.5
0.4
-50
-40
0
UVLO Threshold vs. Temperature
0.1
Output Voltage vs. Output Current
EN Threshold vs. Temperature
-25
-15
0.2
10
0
0.3
Temperature (°C)
Output Current (A)
Temperature (°C)
V
IN
0.4
25
35
= 3.6V, V
Rising
Falling
Rising
Falling
0.5
DS9511-01 April 2011
V
V
50
60
IN
IN
V
0.6
OUT
OUT
= 3.6V
= 5V
= 1.2V,
= 1.2V,
0.7
75
85
0.8
I
I
OUT
OUT
100
110
0.9
= 0A
= 0A
125
135
1