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EP53A7LQ Datasheet(PDF) 4 Page - Enpirion, Inc.

Part No. EP53A7LQ
Description  1000mA Synchronous Buck Regulator with Integrated Inductor
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Maker  ENPIRION [Enpirion, Inc.]
Homepage  http://www.enpirion.com
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EP53A7LQ Datasheet(HTML) 4 Page - Enpirion, Inc.

 
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01543
11/11/2009
Rev:B
EP53A7LQI/EP53A7HQI
©Enpirion 2009 all rights reserved, E&OE
4
www.enpirion.com
Electrical Characteristics
NOTE: TA = -40°C to +85°C unless otherwise noted. Typical values are at TA = 25°C, VIN = 3.6V.
CIN = -4.7µF MLCC, COUT = 10µF MLCC
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNITS
Operating Input Voltage
VIN
2.4
5.5
V
Under Voltage Lock-out –
VIN Rising
VUVLO_R
2.0
V
Under Voltage Lock-out –
VIN Falling
VUVLO_F
1.9
V
Drop Out Resistance
RDO
Input to Output Resistance
350
500
mΩ
Output Voltage Range
VOUT
EP53A7LQI (VDO = ILOAD X RDO)
EP53A7HQI
0.6
1.8
VIN-VDO
3.3
V
Dynamic Voltage Slew
Rate
VSLEW
EP53A7LQI
EP53A7HQI
4
8
V/mS
VID Preset VOUT Initial
Accuracy
ΔVOUT
TA = 25°C, VIN = 3.6V;
ILOAD = 100mA ;
0.8V ≤ VOUT ≤ 3.3V
-2
+2
%
Feedback Pin Voltage
Initial Accuracy
VFB
TA = 25°C, VIN = 3.6V;
ILOAD = 100mA ;
0.8V ≤ VOUT ≤ 3.3V
.588
0.6
0.612
V
Line Regulation
ΔVOUT_LINE
2.4V ≤ VIN ≤ 5.5V
0.03
%/V
Load Regulation
ΔVOUT_LOAD
0A ≤ ILOAD ≤ 1000mA
0.6
%/A
Temperature Variation
ΔVOUT_TEMPL -40°C ≤ TA ≤ +85°C
30
ppm/
°C
Output Current
IOUT
1000
mA
Shut-down Current
ISD
Enable = Low
0.75
µA
EP53A7HQI Operating
Quiescent Current
IQ
ILOAD=0; Preset Output Voltages,
LLM=High
55
µA
EP53A7LQI Operating
Quiescent Current
IQ
ILOAD=0; Preset Output Voltages,
LLM=High
65
µA
OCP Threshold
ILIM
2.4V ≤ VIN ≤ 5.5V
0.6V ≤ VOUT ≤ 3.3V
1.25
1.4
A
Feedback Pin Input
Current
IFB
Note 1
<100
nA
VS0-VS2, Pin Logic Low
VVSLO
0.0
0.3
V
VS0-VS2, Pin Logic High
VVSHI
1.4
VIN
V
VS0-VS2, Pin Input
Current
IVSX
Note 1
<100
nA
Enable Pin Logic Low
VENLO
0.3
V
Enable Pin Logic High
VENHI
1.4
V
Enable Pin Current
IENABLE
Note 1
<100
nA
LLM Engage Headroom
Minimum difference between VIN
and VOUT to ensure proper LLM
operation
700
mV
LLM Pin Logic Low
VLLMLO
0.3
V
LLM Pin Logic High
VLLMHI
1.4
V


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