Rev 0.95 – March 2005
EN5310
Electrical Characteristics
NOTE: V
IN
=3.3V and over operating temperature range unless otherwise noted. Typical values are at T
A
=
25°C.
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
Operating Input
V
IN
2.375
Voltage
Quiescent Supply
No switching, AVIN = 3.3V,
I
Q
PVIN = 3.3V, ENABLE=0V
Current
No-Load Operating
Includes PWM, gate drive and
I
NL
Current
inductor ripple current.
Switching
F
OSC
Frequency
Thermal Overload
T
J
Trip Point
V
OUT
Range
V
OUT
Using external voltage divider
0.9
Accuracy
V
OUT
Over line, load and temperature
Line Regulation
V
IN
= 2.5 to 5.0 volts
∆V
OUT
Load Regulation
I
LOAD
= 0 to 1A
∆V
OUT
T
A
= 0 to 70ºC
Temperature
∆V
OUT
Regulation
T
A
= -40 to 85ºC
∆V
OUT
Transient Response (I
OUT
= 0% to 100% or 100% to 0% of Rated Load)
Peak Deviation
V
OUT
V
IN
= 5V, 1.2V < V
OUT
< 3.3V
Output Voltage Ripple
V
IN
= 5.0V, V
OUT
= 1.2V, I
OUT
= 1A,
Peak-to-peak
V
OUT-PP
C
OUT
= 20uF, 2 x 10µF X5R or X7R
ceramic capacitors
Maximum Continuous Output Current (Note 4)
Output Current
I
OUT
Enable Operation
Max voltage to ensure the converter
Disable Threshold
V
DISABLE
is disabled
Min voltage to ensure the converter
1.8
Enable Threshold
V
ENABLE
is enabled
Power OK Operation
POK low voltage
V
POK
I
POK
= 1mA
Max POK Voltage
V
POK
Supply voltage applied to POK
NOTES:
4.
TYP
MAX
5.5
UNITS
V
mA
mA
MHz
°C
V
%
mV
mV
mV
mV
%
mV
15
35
5
160
2.0
3
3
TBD
TBD
2
12
1000
0.8
5
mA
V
V
0.4
5.5
V
V
Maximum output current may need to be de-rated, based on operating condition, to meet T
J
requirements.
4
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