Micrel, Inc.
MIC2810
Absolute Maximum Ratings
(1)
Supply Voltage (V
IN
, V
IN1
, V
IN2
)............................... 0V to 6V
Enable Input Voltage (V
EN
, V
EN1
, V
EN2
)................... 0V to V
IN
Power Dissipation .................................. Internally Limited
(3)
Lead Temperature (soldering, 10 sec.)...................... 260°C
Storage Temperature (T
s
) .........................–65°C to +150°C
ESD Rating
(4)
.................................................................. 2kV
Operating Ratings
(2)
Supply Voltage (V
IN
, V
IN2
)................................. 2.7V to 5.5V
Supply Voltage (V
IN1
)...................................... 1.65V to 5.5V
Enable Input Voltage (V
EN
, V
EN1
, V
EN2
)................... 0V to V
IN
Junction Temperature (T
J
) ........................ –40°C to +125°C
Junction Thermal Resistance
MLF-16 (θ
JA
) ......................................................56°C/W
Electrical Characteristics
(5)
V
IN
= V
IN1
= V
IN2
= EN1 = EN2 = EN = /LOWQ = V
OUT
(6)
+ 1V; C
OUTDC/DC
= 2.2µF, C
LDO1
= C
LDO2
= 2.2µF; I
OUTDC/DC
= 100mA;
I
OUTLDO1
= I
OUTLDO2
= 100µA; T
J
= 25°C,
bold
values indicate –40°C < T
J
< +125°C; unless noted.
Parameter
UVLO Threshold
UVLO Hysteresis
Ground Pin Current
Conditions
Rising input voltage during turn-on
V
FB
= GND (not switching);
LDO1 or LDO2 (EN = GND; EN1 or EN2 = GND)
Ground Pin Current in
Shutdown
Ground Pin Current
(LOWQ
®
mode)
EN = EN1 = EN2 = 0V
I
DC/DC
< I
LDO1
< I
LDO2
< 10mA (/LOWQ = GND)
LDO1 or LDO2 (EN = GND; EN1 or EN2 = GND);
I
OUT
< 10mA (/LOWQ = GND)
Over-temperature Shutdown
Over-temperature Shutdown
Hysteresis
Enable Inputs (EN; EN1; EN2;
/LOWQ
)
Enable Input Voltage
Logic Low
Logic High
Enable Input Current
V
IL
< 0.2V
V
IH
> 1.0V
Turn-on Time
Turn-on Time
(LDO1 and LDO2)
Turn-on Time (DC/DC)
(/LOWQ = V
IN
; I
LOAD
= 300mA); (/LOWQ = GND; I
LOAD
=
10mA)
POR Output
VTH
Low Threshold, % of nominal (V
DC/DC
or V
LDO1
or V
LDO2
) (Flag
ON)
High Threshold, % of nominal (V
DC/DC
AND V
LDO1
AND
V
LDO2
) (Flag OFF)
VOL
POR Output Logic Low Voltage; IL = 250µA
IPOR
Flag Leakage Current, Flag OFF
SET INPUT
SET Pin Current Source
VSET = 0V
SET Pin Threshold Voltage
POR = High
Min
2.45
Typ
2.55
100
800
55
0.2
38
20
160
23
Max
2.65
1100
85
95
5
60
80
70
Units
V
mV
µA
µA
µA
µA
µA
µA
µA
°C
°C
0.2
1.0
0.1
0.1
240
83
1
1
500
350
V
V
µA
µA
µs
µs
90
91
96
10
0.01
99
100
1
1.75
%
%
mV
µA
µA
V
0.75
1.25
1.25
April 2007
4
M9999-041107-B
MICREL [ MICREL SEMICONDUCTOR ]
