OMO ElectronicOMO Electronic
Expand menu
Hello, Sign inMy Account
0 Cart

LTC4215IUFD-1#PBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P28
LTC4215-1/LTC4215-3
1
421513fc
Hot Swap Controller with
I
2
C Compatible Monitoring
n
Live Board Insertion
n
Electronic Circuit Breakers
n
Computers, Servers
n
Platform Management
n
Allows Safe Insertion into Live Backplane
n
8-Bit ADC Monitors Current and Voltage
n
I
2
C/SMBus Interface
n
Wide Operating Voltage Range: 2.9V to 15V
n
dI/dt Controlled Soft-Start
n
Circuit Breaker Timeout: 20μs (LTC4215-1) or
420μs (LTC4215-3)
n
Three General Purpose Outputs
n
High Side Drive for External N-channel MOSFET
n
No External Gate Capacitor Required
n
Input Overvoltage/Undervoltage Protection
n
Optional Latchoff or Auto-Retry After Faults
n
Alerts Host After Faults
n
Inrush Current Limit with Foldback
n
Available in 24-Pin (4mm × 5mm) QFN
The LTC
®
4215-1/LTC4215-3 Hot Swap™ controllers allow
a board to be safely inserted and removed from a live
backplane. Using an external N-channel pass transistor,
board supply voltage and inrush current are ramped up at
a n a d j u s t a b l e r a t e . A n I
2
C interface and onboard ADC allow
for monitoring of load current, voltage and fault status.
The device features adjustable foldback current limit and
a soft-start pin that sets the dI/dt of the inrush current.
An I
2
C interface may confi gure the part to latch off or
automatically restart after the LTC4215-1/LTC4215-3
detect a current limit fault.
The controller has additional features to interrupt the host
when a fault has occurred, provide three general purpose
outputs, notify when output power is good, detect insertion
of a load card, and power-up either automatically upon
insertion or wait for an I
2
C command to turn on.
The LTC4215-1 has a 20µs circuit breaker fi lter for applica-
tions that require a fast fault response time. The LTC4215-3
has an extended 420µs circuit breaker fi lter for applications
where supply transients may exceed 20µs.
+
UV V
DD
SENSE
+
SENSE
–
LTC4215-1
GATE
TIMER SSON
INTV
CC
POWERGOOD
RESET
OK LED
MEASURED
VOLTAGE
GND EN
SOURCE
OV
SDAI
SDAO
SCL
ADR0
ADR1
FB
GPIO1
GPIO2
GPIO3
ADIN
3.4k
PLUG-IN
CARD
1.18k
P6KE16A
10Ω
0.005Ω
FDC653N
30.1k
V
OUT
12V
3.57k
4215 TA01a
C
L
0.1µF
CONNECTOR 2
CONNECTOR 1
34.8k
BACKPLANE
68nF
0.1µF
GND
SCL
SDA
12V
12V Application With 5A Circuit Breaker Start-Up Waveform
TYPICAL APPLICATION
FEATURES
APPLICATIONS
DESCRIPTION
V
OUT
10V/DIV
V
GPIO1
10V/DIV
INRUSH
CURRENT
2.5A/DIV
V
DD
10V/DIV
40ms/DIV
42151 TA01b
C
L
= 12000µF
5k PULL-UP TO V
DD
CONTACT
BOUNCE
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. Hot Swap is a trademark of Linear Technology Corporation. All other
trademarks are the property of their respective owners. Protected by U.S. Patent 7330065.
LTC4215-1/LTC4215-3
2
421513fc
Supply Voltage (V
DD
) ................................ –0.3V to 24V
Supply Voltage (INTV
CC
) .......................... –0.3V to 6.5V
Input Voltages
GATE-SOURCE (Note 3) .......................... –0.3V to 5V
SENSE
+
, SENSE
–
................ V
DD
– 0.3V to V
DD
+ 0.3V
SOURCE .................................................... –5V to 24V
EN, FB, ON, OV, UV ................................ –0.3V to 12V
ADR0, ADR1, TIMER,
ADIN, SS ................................ –0.3V to INTV
CC
+ 0.3V
GPIO2, GPIO3, SCL, SDA, SDAI, SDAO –0.3V to 6.5V
Output Voltages
GATE, GPIO1 .......................................... –0.3V to 24V
GPIO2, GPIO3 ....................................... –0.3V to 6.5V
Operating Temperature Range
LTC4215C-1 ............................................. 0°C to 70°C
LTC4215I-1 .......................................... –40°C to 85°C
Storage Temperature Range
QFN .................................................... –65°C to 125°C
(Notes 1, 2)
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
Supplies
V
DD
Input Supply Range
l
2.9 15 V
V
OV(VDD)
Input Supply Overvoltage Threshold
l
15 15.6 16.5 V
I
DD
Input Supply Current
l
35 mA
V
DD(UVL)
Input Supply Undervoltage Lockout V
DD
Rising
l
2.75 2.84 2.89 V
8 9
TOP VIEW
25
UFD PACKAGE
24-LEAD (4mm × 5mm) PLASTIC QFN
10 11 12
24 23 22 21 20
6
5
4
3
2
1
UV
OV
SS
GND
ON
EN
SDAO
FB
GPIO1
INTV
CC
TIMER
ADIN
GPIO3
ADR1
V
DD
SENSE
+
SENSE
–
GATE
SOURCE
SDAI
SCL
GPIO2
NC
ADR0
7
14
15
16
17
18
19
13
T
JMAX
= 125°C, θ
JA
= 34°C/W (EXPOSED PAD IS SOLDERED)
EXPOSED PAD (PIN 25) PCB GND CONNECTION OPTIONAL
LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC4215CUFD-1#PBF LTC4215CUFD-1#TRPBF 42151
24-Lead (4mm × 5mm) Plastic QFN
0°C to 70°C
LTC4215IUFD-1#PBF LTC4215IUFD-1#TRPBF 42151
24-Lead (4mm × 5mm) Plastic QFN
–40°C to 85°C
LTC4215CUFD-3#PBF LTC4215CUFD-3#TRPBF 42153
24-Lead (4mm × 5mm) Plastic QFN
0°C to 70°C
LTC4215IUFD-3#PBF LTC4215IUFD-3#TRPBF 42153
24-Lead (4mm × 5mm) Plastic QFN
–40°C to 85°C
LEAD BASED FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC4215CUFD-1 LTC4215CUFD-1#TR 42151
24-Lead (4mm × 5mm) Plastic QFN
0°C to 70°C
LTC4215IUFD-1 LTC4215IUFD-1#TR 42151
24-Lead (4mm × 5mm) Plastic QFN
–40°C to 85°C
LTC4215CUFD-3 LTC4215CUFD-3#TR 42153
24-Lead (4mm × 5mm) Plastic QFN
0°C to 70°C
LTC4215IUFD-3 LTC4215IUFD-3#TR 42153
24-Lead (4mm × 5mm) Plastic QFN
–40°C to 85°C
Consult LTC Marketing for parts specifi ed with wider operating temperature ranges. *The temperature grade is identifi ed by a label on the shipping container.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel specifi cations, go to:
http://www.linear.com/tapeandreel/
PIN CONFIGURATION ABSOLUTE MAXIMUM RATINGS
ORDER INFORMATION
ELECTRICAL CHARACTERISTICS
The l denotes the specifi cations which apply over the full operating
temperature range, otherwise specifi cations are at T
A
= 25°C. V
DD
= 12V unless otherwise noted.
LTC4215-1/LTC4215-3
3
421513fc
The l denotes the specifi cations which apply over the full operating
temperature range, otherwise specifi cations are at T
A
= 25°C. V
DD
= 12V unless otherwise noted.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
DD(HYST)
Input Supply Undervoltage Lockout Hysteresis
l
75 100 125 mV
INTV
CC
Internal Regulator Voltage V
DD
≥ 3.3V
l
2.9 3.1 3.4 V
INTV
CC(UVL)
INTV
C
Undervoltage Lockout INTV
CC
Rising
l
2.55 2.64 2.79 V
INTV
CC(HYST)
INTV
C
Undervoltage Lockout Hysteresis
l
20 55 75 mV
Current Limit and Circuit Breaker
ΔV
SENSE(TH)
Circuit Breaker Threshold (V
DD
– V
SENSE
)
l
22.5 25 27.5 mV
ΔV
SENSE
Current Limit Voltage (V
DD
– V
SENSE
)V
FB
= 1.3V
V
FB
= 0V
Start-Up Timer Expired
l
l
l
22
6.5
65
25
10
75
29
13
90
mV
mV
mV
t
D(OC)
OC Fault Filter
ΔV
SENSE
= 50mV (LTC4215-1)
ΔV
SENSE
= 50mV (LTC4215-3)
l
l
15
300
20
420
30
600
µs
µs
I
SENSE(IN)
SENSE± Pin Input Current V
SENSE
= 12V
l
10 20 35 µA
Gate Drive
ΔV
GATE
External N-channel Gate Drive (V
GATE
– V
SOURCE
)
(Note 3)
V
DD
= 2.9V to 15V
l
4.7 5.9 6.5 V
I
GATE(UP)
External N-channel Gate Pull-Up Current Gate On, V
GATE
= 0V
l
–15 –20 –30 µA
I
GATE(DN)
External N-channel Gate Pull-Down Current Gate Off, V
GATE
= 15V
l
0.8 1 1.6 mA
I
GATE(DN)
Fast Pull-Down Current from GATE to SOURCE During
OC/UVLO
V
DD
– SENSE = 100mV, V
GS
= 4V 300 450 700 mA
t
PHL(SENSE)
(V
DD
– SENSE) High to GATE Low V
DD
– SENSE = 100mV, C
GS
= 10nF
l
0.5 1 µs
V
GS(POWERBAD)
Gate-Source Voltage for Power Bad Fault V
SOURCE
= 2.9V – 15V
l
3.8 4.3 4.7 V
Comparator Inputs
V
ON(TH)
ON Pin Threshold Voltage V
ON
Rising
l
1.210 1.235 1.26 V
ΔV
ON(HYST)
ON Pin Hysteresis
l
60 128 180 mV
I
ON(IN)
ON Pin Input Current V
ON
= 1.2V
l
0±1 µA
V
EN(TH)
EN Input Threshold V
EN
= Rising
l
1.215 1.235 1.255 V
ΔV
EN(HYST)
EN Hysteresis
l
50 128 200 mV
I
EN
EN Pin Input Current EN = 3.5V
l
0±1 µA
V
OV(TH)
OV Pin Threshold Voltage V
OV
Rising
l
1.215 1.235 1.255 V
ΔV
OV(HYST)
OV Pin Hysteresis
l
10 30 40 mV
I
OV(IN)
OV Pin Input Current V
OV
= 1.8V
l
0.2 ±1 µA
V
UV(TH)
UV Pin Threshold Voltage V
UV
Rising
l
1.215 1.235 1.255 V
ΔV
UV(HYST)
UV Pin Hysteresis
l
60 80 100 mV
I
UV(IN)
UV Pin Input Current V
UV
= 1.8V
l
0.2 ±1 µA
V
UV(RTH)
UV Pin Reset Threshold Voltage V
UV
Falling
l
0.33 0.4 0.47 V
ΔV
UV(RHYST)
UV Pin Reset Threshold Hysteresis
l
60 125 210 mV
V
FB
Foldback Pin Power Good Threshold FB Rising
l
1.215 1.235 1.255 V
ΔV
FB(HYST)
FB Pin Power Good Hysteresis
l
3 8 15 mV
I
FB
Foldback Pin Input Current FB = 1.8V
l
0.2 ±1 µA
V
GPIO1(TH)
GPIO1 Pin Input Threshold V
GPIO1
Rising
l
0.8 1 1.2 V
V
GPIO2(TH)
GPIO2 Pin Input Threshold V
GPIO2
Rising
l
1 1.6 2 V
V
GPIO3(TH)
GPIO3 Pin Input Threshold V
GPIO3
Rising
l
1 1.6 2 V
ELECTRICAL CHARACTERISTICS
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P28

LTC4215IUFD-1#PBF

Mfr. #:
Buy LTC4215IUFD-1#PBF
Manufacturer:
Analog Devices Inc.
Description:
Hot Swap Voltage Controllers Hot Swap Contr. w/ADC and I2C
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

Products related to this Datasheet