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PDF ADM4210 Data sheet ( Hoja de datos )
| Número de pieza | ADM4210 | |
| Descripción | Hot Swap Controller | |
| Fabricantes | Analog Devices | |
| Logotipo |  |
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Data Sheet
FEATURES
Controls supply rails from 2.7 V to 16.5 V
Allows protected board removal and insertion to a live
backplane
External sense resistor provides adjustable analog current
limit with circuit breaker
Peak fault current limited with fast response
Charge pumped gate drive for external N-FET switch
Automatic retry or latch-off during current fault
Undervoltage lockout
Low profile (1 mm), 6-lead, TSOT package
Pin compatible with LTC4210-1 and LTC4210-2
APPLICATIONS
Hot swap board insertion: line cards, raid systems
Industrial high-side switches/circuit breakers
Electronic circuit breakers
GENERAL DESCRIPTION
The ADM4210 is a hot swap controller that safely enables a
printed circuit board to be removed and inserted to a live
backplane. This is achieved using an external N-channel power
MOSFET with a current control loop that monitors the load
current through a sense resistor. An internal charge pump is
used to enhance the gate of the N-channel FET. When an
overcurrent condition is detected, the gate voltage of the FET is
reduced to limit the current flowing through the sense resistor.
During an overcurrent condition, the TIMER cap determines
the amount of time the FET remains at a current limiting mode
of operation until it is shut down. The ON (ON-CLR) pin is the
enable input for the device and can be used to monitor the
input supply voltage. The ADM4210 operates with a supply
voltage ranging from 2.7 V to 16.5 V.
The ADM4210 is available in two options: the ADM4210-1 with
automatic retry for overcurrent fault and the ADM4210-2 with
latch off for an overcurrent fault. Toggling the ON (ON-CLR)
pin resets a latched fault. The ADM4210 is packaged in a
6-lead TSOT.
VIN = 5V
GND
Hot Swap Controller
in 6-Lead TSOT Package
ADM4210
FUNCTIONAL BLOCK DIAGRAM
LONG
RSENSE
0.01Ω
VCC SENSE
Q1 VOUT = 5V
+ CLOAD
470µF
RON1
SHORT 20kΩ
RON2
10kΩ
LONG
1.3V
ON
GATE
DRIVE/
GATE
LOGIC
CTIMER
TIMER
ADM4210
CTIMER
0.22µF
GND
RG
100Ω
RC
100Ω
CC
0.01µF
GND
Figure 1.
CLOAD = 470µF
VON
(2V/DIV)
10ms/DIV
Figure 2. Start-Up Sequence
VTIMER
(1V/DIV)
VOUT
(5V/DIV)
IOUT
(0.5A/DIV)
Rev. A
Document Feedback
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700 ©2006–2013 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com
1 page  
ADM4210
ABSOLUTE MAXIMUM RATINGS
Table 2.
Parameter
Rating
VCC Pin
SENSE Pin
−0.3 V to +20 V
−0.3 V to +20 V
VCC − SENSE
TIMER Pin
ON (ON-CLR) Pin
±5 V
−0.3 V to (VCC + 0.3 V)
−0.3 V to +20 V
GATE Pin
Storage Temperature Range
−0.3 V to (VCC + 11 V)
−65°C to +125°C
Operating Temperature Range
Lead Temperature (10 sec)
Junction Temperature
−40°C to +85°C
300°C
150°C
Data Sheet
Stresses above those listed under Absolute Maximum Ratings
may cause permanent damage to the device. This is a stress
rating only; functional operation of the device at these or any
other conditions above those indicated in the operational
section of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect
device reliability.
THERMAL CHARACTERISTICS
θJA is specified for the worst-case conditions, that is, a device
soldered in a circuit board for surface-mount packages.
Table 3. Thermal Resistance
Package Type
6-Lead TSOT
θJA
169.5
Unit
°C/W
ESD 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 this product 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.
Rev. A | Page 4 of 16
5 Page 
ADM4210
80
70
60
VCC = 15V
50
40
VCC = 5V
VCC = 12V
30
VCC = 3V
20
10
0
–50 –25
0
25 50 75 100 125 150
TEMPERATURE (°C)
Figure 27. tOFF(ONLOW) vs. Temperature
50
49
48
47
46
45
44
43
42
41
40
0 2 4 6 8 10 12 14 16
SUPPLY VOLTAGE (V)
Figure 28. Cct Breaker Voltage vs. Supply Voltage
18
Data Sheet
50
45
40
35
30
25
20
15
10
5
0
–50 –25
0
25 50 75 100 125
TEMPERATURE (°C)
Figure 29. Cct Breaker Voltage vs. Temperature
150
Rev. A | Page 10 of 16
11 Page | ||
| Páginas | Total 17 Páginas | |
| PDF Descargar | [ Datasheet ADM4210.PDF ] | |
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