EN63A0QI
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNITS
Falling Edge Deglitch Delay After
Output Crossing 90% level.
FSW=1.2 MHz
POK Deglitch Delay
213
µs
VPOK Logic Low level
VPOK Logic high level
With 4mA Current Sink into POK Pin
0.4
V
V
VIN
94
POK Internal pull-up
resistor
kΩ
With 2 to 4 Converters in Parallel,
the Difference Between Nominal
and Actual Current Levels.
Current Balance
+/-10
%
∆IOUT
∆VIN<50mV; RTRACE< 10 mΩ,
Iload= # Converter * IMAX
tRISE [ms] = CSS [nF] x 0.065;
10nF ≤ CSS ≤ 30nF;
(Note 5 and Note 6)
∆TRISE
VOUT Rise Time
Accuracy
-25
+25
%
(Note 4)
ENABLE Logic High
ENABLE Logic Low
ENABLE Pin Current
VENABLE_HIGH 2.5V ≤ VIN ≤ 6.6V;
1.2
0
VIN
0.8
V
V
VENABLE_LOW
IEN
VIN = 6.6V
50
µA
M/S Ternary Pin Logic
Low
VT-LOW
Tie M/S Pin to GND
0
0.7
1.4
V
V
V
M/S Ternary Pin Logic
Float
VT-FLOAT
VT-HIGH
M/S Pin is Open
1.1
1.8
M/S Ternary Pin Logic
Hi (Note 7)
Pull Up to VIN through an external
resistor REXT . Refer to Figure 7.
2.5V ≤ VIN ≤ 4V, REXT = 15k
4V < VIN ≤ 6.6V, REXT = 51k
117
88
Ternary Pin Input
Current
ITERN
µA
Binary Pin Logic Low
Threshold
VB-LOW
VB-HIGH
ENABLE, S_IN
ENABLE, S_IN
0.8
V
V
Binary Pin Logic High
Threshold
1.8
2.0
S_OUT Low Level
S_OUT High Level
VS_OUT_LOW
VS_OUT_HIGH
0.4
V
V
Note 3: POK threshold when VOUT is rising is nominally 92%. This threshold is 90% when VOUT is falling. After crossing
the 90% level, there is a 256 clock cycle (~213µs at 1.2 MHz) delay before POK is de-asserted. The 90% and 92% levels
are nominal values. Expect these thresholds to vary by 3%.
Note 4: Parameter not production tested but is guaranteed by design.
Note 5: Rise time calculation begins when AVIN > VUVLO and ENABLE = HIGH.
Note 6: VOUT Rise Time Accuracy does not include soft-start capacitor tolerance..
Note 7: M/S pin is ternary. Ternary pins have three logic levels: high, float, and low. This pin is meant to be strapped to
VIN through an external resistor, strapped to GND, or left floating. The state cannot be changed while the device is on.
Enpirion 2012 all rights reserved, E&OE
Enpirion Confidential
www.enpirion.com, Page 6
07077
May 9, 2012
Rev: C
ENPIRION [ ENPIRION, INC. ]
