EN6337QI
Electrical Characteristics
NOTE: VIN=6.6V over operating temperature range unless otherwise noted. Typical values are at TA = 25°C.
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX UNITS
Operating Input Voltage
VIN
2.5
6.6
V
Under Voltage Lock-out –
VIN Rising
Voltage above which UVLO is not
asserted
VUVLOR
VUVLOF
2.3
V
Under Voltage Lock-out –
VIN Falling
Voltage below which UVLO is
asserted
2.075
V
Shut-Down Supply Current IS
ENABLE=0V
100
650
μA
μA
Operating Quiescent
IQ
LLM/SYNC = High
Current
Feedback Pin Voltage
Feedback node voltage at:
VIN = 5V, ILOAD = 0, TA = 25°C
EN6337QI
EN6337QI3
VFB
0.7425
0.735
0.75
0.75
0.7575
0.765
V
Feedback Pin Voltage
EN6337QI
Feedback node voltage at:
2.5V ≤ VIN ≤ 6.6V
0A ≤ ILOAD ≤ 3A, TA = -40 to 85°C
VFB
0.735
0.7275
0.75
0.75
0.765
0.7725
V
EN6337QI3
Feedback pin Input
Leakage Current (Note 1)
IFB
VFB pin input leakage current
-5
5
nA
Measured from when VIN > VUVLOR
ENABLE pin voltage crosses its
logic high threshold to when VOUT
reaches its final value. CSS = 15 nF
&
VOUT Rise Time (Note 1)
tRISE
0.9
10
1.2
1.5
68
ms
nF
Soft Start Capacitor Range CSS_RANGE
Output Drop Out
mV
VDO
RDO
VINMIN - VOUT at Full load
Input to Output Resistance
210
70
315
105
Voltage
Resistance (Note 1)
mΩ
PWM mode
LLM mode (Note 2)
0
3
3
Continuous Output Current IOUT
A
0.002
Over Current Trip Level
Disable Threshold
IOCP
VIN = 5V, VOUT = 1.2V
ENABLE pin logic low.
5
A
V
VDISABLE
0.0
1.8
0.6
VIN
ENABLE pin logic high
2.5V ≤ VIN ≤ 6.6V
ENABLE Threshold
VENABLE
V
ENABLE Lockout Time
TENLOCKOUT
IENABLE
4.2
40
ms
μA
ENABLE pin Input Current
(Note 1)
ENABLE pin has ~180kΩ pull down
Switching Frequency (Free
Running)
Free Running frequency of
oscillator
FSW
1.9
MHz
MHz
V
External SYNC Clock
Frequency Lock Range
FPLL_LOCK
VSYNC_LO
Range of SYNC clock frequency
SYNC Clock Logic Level
1.5
1.8
2.3
0.8
SYNC Input Threshold –
Low (LLM/SYNC PIN)
SYNC Input Threshold –
High (LLM/SYNC PIN)
VSYNC_HI
SYNC Clock Logic Level
2.5
V
(Note 3)
Output voltage as a fraction of
expected output voltage
POK Lower Threshold
POK Output low Voltage
POKLT
VPOKL
90
%
V
With 4mA current sink into POK
0.4
©Enpirion 2011 all rights reserved, E&OE
4
www.enpirion.com
05800
6/17/2011
Rev: B
ENPIRION [ ENPIRION, INC. ]
