Datasheet

MAX6819/MAX6820
SOT23 Power-Supply Sequencers
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
Note 1: 100% production tested at T
A
= +25°C. Specifications over temperature limit are guaranteed by design.
Note 2: Either V
CC1
or V
CC2
must be > 2.125V. The other supply can go to 0.
Note 3: Guaranteed by design, not production tested.
Note 4: t
DELAY
(s) = 2.48
✕
10
6
✕
C
SET
Referenced to GND
V
CC1
, V
CC2
, EN .....................................................-0.3V to +6.0V
SETV, SETD..................-0.3V to the higher of (V
CC1
+ 0.3V) and
(V
CC2
+ 0.3V)
GATE ...................................................................-0.3V to +12.0V
Input Current/Output Current (all pins) ...............................20mA
Continuous Power Dissipation (T
A
= +70°C)
6-Pin SOT23 (derate 8.7mW/°C above +70°C)............696mW
Operating Temperature Range .........................-40°C to +125°C
Junction Temperature......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering 10s) ..................................+300°C
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX
UNITS
Operating Voltage Range
V
CC1
,
V
CC2
(Note 2) 0.9 5.5 V
V
CC1
, V
CC2
Supply Current I
CC
V
CC1
= V
CC2
= +3.3V 60
120
µA
V
C C 1
, V
C C 2
D i sab l e M od e C ur r ent
V
CC1
= V
CC2
= +3.3V, EN = GND
20 µA
MAX6819 6
V
CC1
, V
CC2
Slew Rate (Note 3)
MAX6820 (Note 4)
1.2 / t
DELAY
V/s
Undervoltage Lockout (UVLO)
V
UVLO
1.875
2.0
2.125
V
SETV Threshold V
TH
V
SETV
rising, enables GATE
0.602
0.618 0.634
V
SETV Input Current (Note 3)
10
100
nA
SETV Threshold Hysteresis V
SETV
falling, disables GATE
-1 %
SETV to GATE Delay
t
DELAY
V
SETV
> V
TH
, V
EN
≥ 2V (MAX6819)
140
200 280
ms
SETD Ramp Current (MAX6820)
I
SETD
V
CC1
or V
CC2
> +2.125V
400 500 600
nA
SETD Voltage (MAX6820)
V
SETD
V
CC1
or V
CC2
> +2.125V
1.210
1.242 1.273
V
SETD Threshold Hysteresis
(MAX6820)
V
SETD
falling -62 mV
GATE Turn-On Time t
ON
C
GATE
= 1500p F, V
C C 2
= + 3.3V , V
GATE
= + 7.8V
0.5
1.5 10 ms
GATE Turn-Off Time t
OFF
C
GATE
= 1500p F, V
C C 2
= + 3.3V , V
GATE
= + 0.5V
30 µs
With respect to V
CC2
(Note 2)
R
GATE
> 50MΩ to V
CC2
4.5 5.5 6.0
GATE Voltage
V
GATE
With respect to V
CC2
(Note 2)
R
GATE
> 5MΩ to V
CC2
4.0 6.0
V
V
IL
0.4
EN Input Voltage
V
IH
V
CC1
or V
CC2
> +2.125V to + 5.5V
2.0
V
ELECTRICAL CHARACTERISTICS
(V
CC1
or V
CC2
> +2.125V to +5.5V, T
A
= -40°C to +125°C, unless otherwise specified. Typical values are at T
A
= +25°C.) (Note 1)