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LT6555
2
6555f
Total Supply Voltage (V+ to V–) ............................ 12.6V
Input Current (Note 2) ........................................
±10mA
Output Current (Continuous) .............................
±70mA
EN to DGND Voltage (Note 2) ................................. 5.5V
SEL to DGND Voltage (Note 2) .................................. 8V
Output Short-Circuit Duration (Note 3) ............ Indefinite
Operating Temperature Range (Note 4) ... –40
°C to 85°C
Specified Temperature Range (Note 5) .... –40
°C to 85°C
ORDER PART
NUMBER
TJMAX = 150°C, θJA = 90°C/W
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
LT6555CGN
LT6555IGN
ABSOLUTE
AXI U
RATI GS
W
WW
U
PACKAGE/ORDER I FOR ATIO
UU
W
(Note 1)
Junction Temperature
SSOP ................................................................ 150
°C
QFN .................................................................. 125
°C
Storage Temperature Range
SSOP ................................................. –65
°C to 150°C
QFN ................................................... –65
°C to 125°C
Lead Temperature (Soldering, 10 sec)
SSOP ................................................................ 300
°C
1
2
3
4
5
6
7
8
9
10
11
12
TOP VIEW
GN PACKAGE
24-LEAD PLASTIC SSOP
24
23
22
21
20
19
18
17
16
15
14
13
IN1A
DGND
IN2A
VREF
IN3A
AGND1
IN1B
AGND2
IN2B
AGND3
IN3B
V–
V+
EN
SEL A/B
V+
OUT1
V–
OUT2
V+
OUT3
V–
V+
G = +2
ORDER PART
NUMBER
UF PART*
MARKING
6555
LT6555CUF
LT6555IUF
24 23 22 21 20 19
7
8
9
TOP VIEW
25
UF PACKAGE
24-LEAD (4mm
× 4mm) PLASTIC QFN
10 11 12
6
5
4
3
2
1
13
14
15
16
17
18
VREF
IN3A
AGND1
V–
IN1B
AGND2
V+
OUT1
V–
OUT2
V+
OUT3
IN2A
DGND
IN1A
V
+
EN
SEL
A/B
IN2B
AGND3
IN3B
V
+
V
+
V
–
TJMAX = 125°C, θJA = 37°C/W, θJC = 2.6°C/W
EXPOSED PAD (PIN 25) IS V–
MUST BE SOLDERED TO PCB
ELECTRICAL CHARACTERISTICS The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VS = ±5V, RL = 150, CL = 1.5pF, VEN = 0.4V, VAGND, VDGND, VVREF = 0V.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
VOS
Input Referred Offset Voltage
VIN = 0V, VOS = VOUT/2
5
±16
mV
●
±24
mV
IIN
Input Current
●
–17
±45
A
RIN
Input Resistance
VIN = ±1V
●
100
400
k
CIN
Input Capacitance
f = 100kHz
1
pF
PSRR
Power Supply Rejection Ratio
VS = ±2.25V to ±6V (Note 6)
●
56
62
dB
IPSRR
Input Current Power Supply Rejection
VS = ±2.25V to ±6V (Note 6)
●
1
±4
A/V
AV ERR
Gain Error
VOUT = ±2V, Nominal Gain 2V/V
●
±2.5
%
AV MATCH
Gain Matching
Any One Channel to Another
±0.33
%
VOUT
Output Voltage Swing
(Note 7)
±3.15
±3.4
V
●
±3.0
V