RT9511 RICHTEK [Richtek Technology Corporation], RT9511 Datasheet - Page 8

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

(V
specification)
RT9511
Step-Down Converter
www.richtek.com
8
BAT_ON Pull High
BAT_ON Pull Low Switch
Resistance
BAT_ON Pull High Switch
Resistance
Input Voltage Range
Quiescent Current
Shutdown Current
Reference Voltage
Adjustable Output Range V
Adjustable Output
Voltage Accuracy
FB1, 2 Input Current
P-MOSFET R
N-MOSFET R
P-Channel Current Limit I
EN1, 2 High-Level Input
Voltage
EN1, 2 Low-Level Input
Voltage
Under Voltage Lock Out
threshold
Hysteresis
Thermal Shutdown
Temperature
Maximum Duty Cycle
LX1, 2 Current Source
Oscillator Frequency
DD1, 2
= 3.6V, V
Parameter
Parameter
ON
ON
OUT1, 2
= 2.5V, L = 2.2 H, C
V
I
I
V
I
R
R
V
V
UVLO
f
T
Qx
SHDNx
FB1, 2
L IM_ P
OSC
Symbol
V
SD
REF
OUT1, 2
EN1, 2_H
EN1, 2_L
DD1, 2
DS(ON)_P
DS(ON)_N
OUT
(Note 6)
V
V
I
ENx = GND
(Note 5)
V
0A < I
V
I
I
V
V
V
V
OUTx
OUT1, 2
OUT1, 2
Symbol
DD1 , 2
LX1, 2
IN1, 2
DD1, 2
DD1, 2
DD1, 2
DD1, 2
DD1, 2
FB1, 2
= 0mA, V
OU T
= 4.7 F, C
= 3.6V
= V
= 3.6V, V
= 3.6V, I
= V
= 2.5V to 5.5 V
= 2.5V to 5.5V
= 2.5V to 5.5V
= 200mA
= 200mA
Test Conditions
< 1A
DD1 , 2
OUT1, 2
As SYS Raising,
V
V
V
BATT
BAT
ACIN
FB1 , 2
OUT1, 2
OUT1 , 2
L X1,2
= 4V
+ V to 5.5V
Test Conditions
V
V
V
V
= 5V
= 4V, SYS-BAT
DD1, 2
DD1, 2
DD1, 2
DD1, 2
= V
= 10 F, I
= 0V or
= 100mA
REF
= 3.6V
= 2.5V
= 3.6V
= 2.5V
+ 5%
MAX
= 1A, T
0.588
V
Min
100
2.5
1.4
1.5
1.2
REF
--
--
--
--
--
--
--
--
--
--
50
1
A
3
= 25 C, unless otherwise
Min
--
--
50
0.28
0.38
0.25
0.35
Typ
160
0.1
0.6
1.5
1.8
0.1
1.5
50
--
--
--
--
--
--
--
--
Typ
V
10
30
--
DD1, 2
DS9511-01 April 2011
0.612
Max
100
5.5
0.4
1.8
70
50
--
--
--
--
--
--
--
--
--
--
1
3
Max
--
--
0
0.2V
Unit
MHz
Unit
mV
nA
%
%
V
V
V
A
V
V
V
V
C
A
A
A