REV. 0
ADM1070
–3–
Parameter Min Typ Max Unit Test Conditions
SENSE PIN–CURRENT SENSE (continued)
Continuous Short Circuit Time before Latched 2100 2800 3500 ms TIMER Pin Tied to V
EE
Shutdown, t
SHORT
(V
UVR
< UV/OV < V
OVF
)
1500 2000 2500 ms C
TIMER
= 470 pF
(V
UVR
< UV/OV < V
OVF
)*
Operating Sense Voltage Range, V
SOP
0 0.11 V
Input Current, I
SENSE
–500 +500 µAV
SENSE
= –2 V to +2 V
TIMER PIN
––
TIMING CONTROL
Internal Oscillator Default Frequency, 9.0 kHz TIMER Pin Tied to V
EE
f
TIMERINT
(Not Seen at Pin)
External/Internal Selection Threshold, V
TIMERTHEI
0.3 0.45 0.6 V
High Trip Threshold, V
TIMERTHH
3.0 3.5 4.0 V
Low Trip Threshold, V
TIMERTHL
1.2 1.5 1.8 V
Pull-Down Current, I
TIMERDN
15 24 31 µAV
TIMER
> V
TIMERTHH
Pull-Up Current, I
TIMERUP
–15 –24 –31 µAV
TIMERTHEI
< V
TIMER
< V
TIMERTHL
Start-Up Current, I
TIMERSTART
–12 –19 –26 µAV
TIMER
< V
TIMERTHEI
*Not production tested. Guaranteed by design.
Specifications subject to change without notice.
ABSOLUTE MAXIMUM RATINGS*
(All voltages referred to V
EE
,
unless otherwise noted. T
A
= 25°C, unless other-
wise noted.)
Supply Voltage (V
DD
–V
EE
) . . . . . . . . . . . . . –0.3 V to –200.0 V
Maximum Shunt Supply Voltage, V
SS
. . . . . . . . . . . . . . . 16 V
SENSE Pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . –2 V to +16 V
GATE Pin . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +16 V
UV/OV Pin . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +15 V
TIMER Pin . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +10 V
Maximum Junction Temperature . . . . . . . . . . . . . . . . . 125°C
Temperature Range . . . . . . . . . . . . . . . . . . . . –40°C to +85°C
Continuous Power Dissipation . . . . . . . . . . . . . . . . . 282 mW
Storage Temperature Range . . . . . . . . . . . –65°C to +150°C
Lead Temperature (Soldering, 10 sec) . . . . . . . . . . . . . 300°C
*This is a stress rating only and functional operation of the device at these or any
other conditions above those indicated in the operation sections of this specifica-
tion is not implied. Exposure to absolute maximum rating conditions for extended
periods of time may affect reliability.
THERMAL CHARACTERISTICS
6-Lead SOT-23 Package:
JA
= 226.6°C/W,
JC
= 91.99°C/W
CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily
accumulate on the human body and test equipment and can discharge without detection. Although the
ADM1070 features proprietary ESD protection circuitry, permanent damage may occur on devices
subjected to high energy electrostatic discharges. Therefore, proper ESD precautions are recommended
to avoid performance degradation or loss of functionality.
WARNING!
ESD SENSITIVE DEVICE
ORDERING GUIDE
Temperature Package Package
Model Range Description Option
ADM1070ART –40ºC to +85ºC 6-Lead RT-6
REV. 0–4–
ADM1070
PIN CONFIGURATION
TOP VIEW
(Not to Scale)
6
5
4
SENSE
V
IN
GATE
UV/OV
TIMER
ADM1070ART
1
2
3
V
EE
PIN FUNCTION DESCRIPTION
Pin No. Mnemonic Function
1 SENSE Connection to External FET Source Voltage. A sense resistor is connected in the supply path
between the SENSE Pin and V
EE
, and the voltage across this resistor is monitored to detect current
faults. This voltage is fed as an input to the linear current regulator. When it reaches 100 mV for
a specified period, t
ON
, the regulator reduces the gate voltage and drives the FET as a linear pass
device. If current monitoring is not required, this feature can be turned off by shorting the
SENSE Pin and V
EE
together.
2V
EE
Device Negative Supply Voltage. This pin should be connected to the lower potential of the
power supply.
3V
IN
Shunt Regulated On-Chip Supply, Nominally V
EE
+ 12.3 V. This pin should be current fed
through a dropper resistor that is connected to the higher potential of the power supply inputs.
4TIMER
Allows User Control over Timing Functions by Determining Frequency of Oscillator. Fre-
quency set by connecting external capacitor to V
EE
. Tying pin directly to V
EE
causes oscillator to
default to internally set value.
5 UV/OV Input Pin for Overvoltage and Undervoltage Detection Circuitry. The voltage appearing on the
UV/OV Pin is proportional to board supply and is determined by external resistors. When the
voltage on UV/OV falls below the undervoltage threshold of 0.86 V, the GATE Pin is driven low.
When the voltage appearing at the UV/OV Pin rises above the overvoltage threshold of 1.97 V,
the GATE Pin is also driven low. If the external resistor ratio of R1/R2 = 40 is used, then this
gives an operating range of –36 V to –77 V.
6 GATE Output to External FET Gate Drive. Controlled by linear current regulator. The gate is driven
low if an overvoltage or undervoltage fault occurs or if a current fault lasts for longer than the
time, t
ON
. When in linear regulation, the GATE Pin voltage is controlled as part of the servo loop.
No external compensation is required. When the FET is fully enhanced and the load capacitance
has been charged, the GATE Pin reaches a high level of typically 12 V.
REV. 0
ADM1070
–5–
TEMPERATURE – C
2.0
0
–50 –35
I
IN
– mA
–20 –5 10 25 40 55 70
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
85
TPC 1. I
IN
vs. Temperature
V
IN
– V
1000
02
I
IN
– mA
4681012 14
100
10
1
16
0.1
+85C
+25C
–40C
TPC 2. I
IN
vs. V
IN
TEMPERATURE – C
–45
R
Z
– V
10
9
8
7
6
5
4
3
2
–35 –25 –15 –5 5 15 25 35 45 55 65 75 85
TPC 3. R
Z
vs. Temperature
TEMPERATURE – C
–45
V
Z
– V
14.5
14.0
13.5
13.0
12.5
12.0
11.5
11.0
–35 –25 –15 –5 5 15 25 35 45 55 65 75 85
TPC 4. V
Z
vs. Temperature
TEMPERATURE – C
–50
V
LKO
– V
12
11
10
9
8
6
–35 –20 –5 10 25 40 55 70 85
7
TPC 5. Undervoltage Lockout, V
LKO
vs. Temperature
TEMPERATURE – C
–50
V
CB
– mV
100
95
85
80
70
–35 –20 –5 10 25 40 55 70 85
75
60
65
RISING
FALLING
90
TPC 6. Circuit Breaker Current Limit Voltage,
V
CB
vs. Temperature
Typical Performance Characteristics–

ADM1070ART-REEL7

Mfr. #:
Manufacturer:
Description:
Hot Swap Voltage Controllers 6-Pin -48V Hot Swap Controller I.C.
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
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