XRP7724
Quad Channel Digital PWM/PFM
Programmable Power Management System
I
NPUT
V
OLTAGE
R
ANGE AND
U
NDERVOLTAGE
L
OCKOUT
Parameter
VCC Range
Min.
5.5
4.75
Typ.
Max.
25
5.5
Units
V
V
•
•
Conditions
With VCC connected to LDO5
V
OLTAGE
F
EEDBACK
A
CCURACY AND
O
UTPUT
V
OLTAGE
S
ET
P
OINT
R
ESOLUTION
Parameter
VOUT Regulation Accuracy
Low Output Range
0.6V to 1.6V
PWM Operation
VOUT Regulation Accuracy
Mid Output Range
0.6V to 3.2V
PWM Operation
VOUT Regulation Accuracy
High Output Range
0.6V to 5.5V
PWM Operation
VOUT Regulation Range
VOUT Native Set Point
Resolution
VOUT Fine Set Point Resolution
1
Min.
-5
-20
-7.5
-22.5
-15
-45
-20
-50
-30
-90
-40
-100
0.6
12.5
25
50
2.5
5
10
120
90
75
10
1
0.67
-155
-310
-620
-5
-10
-20
9
1
-0.5
0.5
157.5
315
630
5
10
20
16
Typ.
Max.
5
20
7.5
22.5
15
45
20
50
30
90
40
100
5.5
Units
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
V
mV
•
•
•
•
•
•
•
Conditions
0.6 ≤ VOUT ≤ 1.6V
0.6 ≤ VOUT ≤ 1.6V
VCC=LDO5
0.6 ≤ VOUT ≤ 3.2V
0.6 ≤ VOUT ≤ 3.2V
VCC=LDO5
0.6 ≤ VOUT ≤ 5.5V
0.6 ≤ VOUT ≤ 4.2V
VCC=LDO5
Without external divider network
Low Range
Mid Range
High Range
Low Range
Mid Range
High Range
Low Range
Mid Range
High Range
Low Range
Mid Range
High Range
Low Range
Mid Range
High Range
Low Range
Mid Range
High Range
mV
VOUT Input Resistance
VOUT Input Resistance in PFM
Operation
Power Good and OVP Set Point
Range (from set point)
Power Good and OVP Set Point
Accuracy
BFB Set Point Range
BFB Set Point Resolution
BFB Accuracy
kΩ
MΩ
mV
mV
V
V
V
Note 1: Fine Set Point Resolution not available in PFM
© 2012 Exar Corporation
3/29
Rev. 1.0.1
EXAR [ EXAR CORPORATION ]
