ER3110DI Datasheet, PDF (6/23 Pages) Altera Corporation – Synchronous Buck Regulator

Page 6
Electrical Specifications T_A = -40°C to +125°C, V_PVIN = 3V to 36V, unless otherwise noted. Typical values are at T_A = +25°C. Boldface limits
apply over the junction temperature range, -40°C to +125°C (Continued)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
(Note 8)
MAX
TYP
(Note 8) UNITS
POWER-GOOD
Lower POK Threshold - VFB Rising
90
94
%
Lower POK Threshold - VFB Falling
82.5
86
%
Upper POK Threshold - VFB Rising
116.5
120
%
Upper POK Threshold - VFB Falling
107
112
%
POK Propagation Delay
Percentage of the soft-start time
10
%
POK Low Voltage
TRACKING AND SOFT-START
I_SINK = 3mA, EN = V_AVINO, V_FB = 0V
0.05
0.3
V
Soft-Start Charging Current
Internal Soft-Start Ramp Time
FAULT PROTECTION
I_SS
EN/SS = V_AVINO
4.2
5.5
6.5
µA
1.5
2.4
3.4
ms
Thermal Shutdown Temperature
Current Limit Blanking Time
T_SD
T_HYS
t_OCON
Rising threshold
Hysteresis
150
°C
20
°C
17
Clock
pulses
Overcurrent and Auto Restart Period
Positive Peak Current Limit
t_OCOFF
IPLIMIT
(Note 7)
8
SS cycle
1.3
1.5
1.7
A
PFM Peak Current Limit
Zero Cross Threshold
I_{PK_PFM}
0.34
0.4
0.5
A
15
mA
Negative Current Limit
INLIMIT (Note 7)
-0.67
-0.6
-0.53
A
POWER MOSFET
High-side
Low-side
SW Leakage Current
R_HDS
R_LDS
I_SW = 100mA, V_AVINO = 5V
I_SW = 100mA, V_AVINO = 5V
EN = SW = 0V
250
350
mΩ
90
130
mΩ
300
nA
SW Rise Time
EN/SYNC
t_RISE
V_PVIN = 36V
10
ns
Input Threshold
Falling edge, logic low
0.4
1
V
Rising edge, logic high
1.2
1.4
V
EN Logic Input Leakage Current
EN = 0V/36V
-0.5
0.5
µA
SYNC Logic Input Leakage Current
SYNC = 0V
10
100
nA
SYNC = 5V
1.0
1.55
µA
NOTES:
6. Test Condition: V_PVIN = 36V, FB forced above regulation point (0.6V), no switching, and power MOSFET gate charging current not included.
7. Established by both current sense amplifier gain test and current sense amplifier output test @ I_L = 0A.
8. Parameters with MIN and/or MAX limits are 100% tested at +25°C, unless otherwise specified. Temperature limits established by
characterization and are not production tested.
9. Minimum On-Time required to maintain loop stability.
Enpirion Power Datasheet ER3110DI Wide PVIN 1A Synchronous Buck Regulator
10038
May 28, 2014
May 2014 Altera Corporation
Rev A