XRP7724
Quad Channel Digital PWM/PFM
Programmable Power Management System
INPUT VOLTAGE RANGE AND UNDERVOLTAGE LOCKOUT
Parameter
Min.
Typ.
Max.
Units
Conditions
•
•
25
V
V
5.5
VCC Range
5.5
With VCC connected to LDO5
4.75
VOLTAGE FEEDBACK ACCURACY AND OUTPUT VOLTAGE SET POINT RESOLUTION
Parameter
Min.
Typ.
Max.
Units
Conditions
5
20
7.5
22.5
15
45
20
50
30
90
40
100
5.5
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
V
-5
-20
-7.5
-22.5
-15
-45
-20
-50
-30
-90
-40
-100
0.6
VOUT Regulation Accuracy
Low Output Range
0.6V to 1.6V
0.6 ≤ VOUT ≤ 1.6V
•
•
•
•
•
0.6 ≤ VOUT ≤ 1.6V
VCC=LDO5
PWM Operation
VOUT Regulation Accuracy
Mid Output Range
0.6V to 3.2V
0.6 ≤ VOUT ≤ 3.2V
0.6 ≤ VOUT ≤ 3.2V
VCC=LDO5
PWM Operation
VOUT Regulation Accuracy
High Output Range
0.6V to 5.5V
0.6 ≤ VOUT ≤ 5.5V
0.6 ≤ VOUT ≤ 4.2V
VCC=LDO5
PWM Operation
•
•
VOUT Regulation Range
Without external divider network
12.5
25
50
Low Range
Mid Range
High Range
VOUT Native Set Point
Resolution
mV
mV
kΩ
2.5
5
10
Low Range
Mid Range
High Range
VOUT Fine Set Point Resolution1
VOUT Input Resistance
120
90
75
Low Range
Mid Range
High Range
Low Range
Mid Range
High Range
10
1
0.67
VOUT Input Resistance in PFM
Operation
MΩ
mV
mV
157.5
315
630
Low Range
Mid Range
High Range
-155
-310
-620
Power Good and OVP Set Point
Range (from set point)
5
10
20
Low Range
Mid Range
High Range
-5
-10
-20
Power Good and OVP Set Point
Accuracy
BFB Set Point Range
BFB Set Point Resolution
BFB Accuracy
16
V
V
V
9
1
0.5
-0.5
Note 1: Fine Set Point Resolution not available in PFM
© 2012 Exar Corporation
3/29
Rev. 1.0.1
EXAR [ EXAR CORPORATION ]
