XR77128 Datasheet, PDF (3/28 Pages) Exar Corporation – Quad Output Digital PWM/PFM

Symbol
Parameter
Conditions
V_ENABLE ENABLE Turn On Threshold
VCC = 12V, Enable Rising
I_LEAK
ENABLE Pin Leakage Current
EN = 5V
EN = 0V
Input Voltage Range and Undervoltage Lockout
VCC
VCC Range
with VCC connected to LDO5
Voltage Feedback Accuracy and Output Voltage Set Point Resolution
V_{A_VO}
VOUT Regulation Accuracy
Low Output Range
0.6 ≤ VOUT ≤ 1.6V, PWM operation
Mid Output Range
0.6 ≤ VOUT ≤ 3.2V, PWM operation
High Output Range
0.6 ≤ VOUT ≤ 5.5V, PWM operation
V_{R_VO}
V_NATIVE
VOUT Regulation Range
VOUT Native Set Point Resolution
V_FINE
VOUT Fine Set Point Resolution¹
R_IN
VOUT Input Resistance
R_IN
VOUT Input Resistance in PFM
V_{SET_PG} Power Good and OVP Set Point
Range (from set point)
V_{SET_PG} Power Good and OVP Set Point
Accuracy
V_{SET_BF}
V_{RES_BF}
V_{A_BF}
BFB Set Point Range
BFB Set Point Resolution
BFB Accuracy
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
© 2014 Exar Corporation
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XR77128
Min
Typ
Max
0.65
0.95
3.6
10
-10
Units
V
μA
μA

5.5

4.75
25
V
5.5
V
-5

-12.5
-10

-25
-20

-50

0.6
5
mV
12.5
mV
10
mV
25
mV
20
mV
50
mV
5.5
V
12.5
mV
25
mV
50
mV
2.5
mV
5
mV
10
mV
120
kΩ
80
kΩ
65
kΩ
10
MΩ
1
MΩ
0.67
MΩ
-155
157.5
mV
-310
-620
-5
-10
-20
9
315
mV
630
mV
5
mV
10
mV
20
mV
16
V
1
V
-0.5
0.5
V
exar.com/XR77128
Rev 1A