LTC4221CGN View Datasheet(PDF) - Linear Technology
Part Name
Description
MFG CO.
LTC4221CGN
Linear Technology
LTC4221CGN Datasheet PDF : 28 Pages
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LTC4221
ABSOLUTE MAXIMUM RATINGS PI CO FIGURATIO
(Note 1)
Supply Voltage (VCCn) ............................................ 17V
SENSEn Pins ............................ – 0.3V to (VCCn + 0.3V)
FB, ON Pins .............................. – 0.3V to (VCC1 + 0.3V)
TIMER Pin .................................................. – 0.3V to 2V
GATE Pins (Note 3) ................................... – 0.3V to 21V
ON1 1
VCC1 2
SENSE1 3
GATE1 4
TOP VIEW
16 ON2
15 VCC2
14 SENSE2
13 GATE2
PWRGD, FAULT, FILTER Pins ................... – 0.3V to 17V
FB1 5
12 FB2
Operating Temperature Range
PWRGD1 6
11 PWRGD2
LTC4221C ............................................... 0°C to 70°C
FAULT 7
10 GND
LTC4221I ............................................ – 40°C to 85°C
FILTER 8
9 TIMER
Storage Temperature Range ................. – 65°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300°C
GN PACKAGE
16-LEAD PLASTIC SSOP
TJMAX = 125°C, θJA = 130°C/W
UW U
ORDER I FOR ATIO
LEAD FREE FINISH
TAPE AND REEL
PART MARKING
PACKAGE DESCRIPTION
LTC4221CGN#PBF
LTC4221CGN#TRPBF
4221
16-Lead Plastic SSOP
LTC4221IGN#PBF
LTC4221IGN#TRPBF
4221I
16-Lead Plastic SSOP
LEAD BASED FINISH
TAPE AND REEL
PART MARKING
PACKAGE DESCRIPTION
LTC4221CGN
LTC4221CGN#TR
4221
16-Lead Plastic SSOP
LTC4221IGN
LTC4221IGN#TR
4221I
16-Lead Plastic SSOP
Consult LTC Marketing for parts specified with wider operating temperature ranges.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/
TEMPERATURE RANGE
0°C to 70°C
–40°C to 85°C
TEMPERATURE RANGE
0°C to 70°C
–40°C to 85°C
ELECTRICAL CHARACTERISTICS The ● indicates specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VCC1 = 5V, VCC2 = 3.3V, unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
VCC1
Supply Voltage Channel 1
● 2.7
13.5
VCC2
Supply Voltage Channel 2
VCC2 ≤ VCC1
●1
13.5
ICC1
VCC1 Supply Current
ON1, ON2 = 2V
●
2.2
3
ICC2
VCC2 Supply Current
ON1, ON2 = 2V
●
0.05
0.15
VCC1(UVL)
Undervoltage Lockout for Channel 1 VCC1 Rising
● 2.1
2.5
2.675
ΔVCC1(HYST)
Undervoltage Lockout Hysteresis
110
VCC2(UVL)
ΔVCC2(HYST)
Undervoltage Lockout for Channel 2 VCC2 Rising
Undervoltage Lockout Hysteresis
● 0.65
0.8
0.975
25
ISENSE1(IN)
SENSE1 Pin Input Current
0V ≤ VSENSE1 ≤ VCC1
●
±0.03
±5
ISENSE2(IN)
SENSE2 Pin Input Current
VSENSE2 = VCC2
VSENSE2 = 0V
●
±0.2
±5
1000
VSENSE(FC)
SENSEn Threshold Voltage
Channeln Fast Comparator Threshold
● 85
100
115
VSENSE(SC)
SENSEn Threshold Voltage
Channeln Slow Comparator Threshold
22.5
25
27.5
● 20.5
25
29.5
VSENSE(ACL)
SENSEn Voltage at Active
Current Limit
VFBn = 0
VFBn = 0.65V
4
9
16
17.5
25
32.5
2
UNITS
V
V
mA
mA
V
mV
V
mV
μA
μA
μA
mV
mV
mV
mV
mV
4221fa
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