Datasheet

Data Sheet ADM12914
Rev. D | Page 3 of 16
SPECIFICATIONS
T
A
= −40°C to +125°C. Typical values at T
A
= 25°C, unless otherwise noted. V
CC
= 3.3 V, VLx = 0.45 V, VHx = 0.55 V,
LATCH
= V
CC
,
SEL = V
CC
, DIS = open, unless otherwise noted.
Table 1.
Parameter Symbol Min Typ Max Unit Test Conditions/Comments
SHUNT REGULATOR
V
CC
Shunt Regulator Voltage V
SHUNT
6.3 6.6 6.8 V I
CC
= 5 mA
V
CC
Shunt Regulator Load Regulation ΔV
SHUNT
150 mV I
CC
= 2 mA to 10 mA
SUPPLY
Supply Voltage
1
V
CC
2.3 V
SHUNT
V
Minimum V
CC
Output Valid V
CCR(MIN)
0.9 V DIS = 0 V
Supply Undervoltage Lockout V
CC(UVLO)
1.94 2 2.06 V DIS = 0 V, V
CC
rising
Supply Undervoltage Lockout Hysteresis ΔV
CC(HYST)
15 25 35 mV DIS = 0 V
Supply Current I
CC
62 100 μA V
CC
= 2.3 V to 6.0 V
REFERENCE OUTPUT
Reference Output Voltage V
REF
0.994 1 1.008 V I
VREF
= ±1 mA
UNDERVOLTAGE/OVERVOLTAGE CHARACTERISTICS
Undervoltage/Overvoltage Threshold V
UOT
496 500 504 mV V
CC
= 2.3 V to 6.0 V
Undervoltage/Overvoltage Threshold to Output Delay t
UOD
100 200 350 μs VHx = V
UOT
− 5 mV or VLx = V
UOT
+ 5 mV
VHx, VLx Input Current
I
VHL
±10
nA
UV/OV Timeout Period
t
UOTO
7.5 8.5 10.5 ms C
TIMER
= 1 nF
OV LATCH CLEAR INPUT
OV Latch Clear Threshold Input High
V
LATCH
(IH)
1.2
V
OV Latch Clear Threshold Input Low
V
LATCH
(IL)
0.8 V
LATCH Input Current
I
LATCH
50 nA V
LATCH
> 0.5 V
DISABLE INPUT
DIS Input High V
DIS(IH)
1.2 V
DIS Input Low
V
DIS(IL)
0.8
V
DIS Input Current I
DIS
1.25 2 2.75 μA V
DIS
> 0.5 V
TIMER CHARACTERISTICS
TIMER Pull-Up Current
I
TIMER(UP)
−1.7
−2.1
−2.5
μA
V
TIMER
= 0 V
TIMER Pull-Down Current I
TIMER(DOWN)
1.7 2.1 2.5 μA V
TIMER
= 1.6 V
TIMER Disable Voltage V
TIMER(DIS)
−180 −270 mV Referenced to V
CC
OUTPUT VOLTAGE
Output Voltage High UV/ OV
V
OH
1 V V
CC
= 2.3 V; I
UV
/
OV
= −1 μA
Output Voltage Low UV/ OV
V
OL
0.1 0.3 V V
CC
= 2.3 V; I
UV
/
OV
= 2.5 mA
0.01 0.15 V V
CC
= 0.9 V; I
UV
= 100 μA
THREE-STATE INPUT SEL
Low Level Input Voltage V
IL
0.4 V
High Level Input Voltage V
IH
1.4 V
Pin Voltage when Left in High-Z State V
Z
0.8 0.9 1.0 V I
SEL
= ±10 μA
SEL High, Low Input Current I
SEL
±25 μA
Maximum SEL Input Current I
SEL(MAX)
±30 μA SEL tied to V
CC
or GND
1
The maximum voltage on the V
CC
pin is limited by the input current. The V
CC
pin has an internal 6.5 V shunt regulator and, therefore, a low impedance supply
exceeding 6 V may exceed the maximum allowable input current. When operating from a higher supply than 6 V, always use a dropper resistor.