LTC1923 LINER [Linear Technology], LTC1923 Datasheet - Page 2

• Manufacturer Part Number: LTC1923
• Description: High Efficiency Thermoelectric Cooler Controller
• Manufacturer: LINER [Linear Technology]

PACKAGE/ORDER I FOR ATIO
ABSOLUTE AXI U RATI GS
LTC1923
V
SDSYNC, R
FB, CNTRL, V
CS
Consult LTC Marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS
The
V
SYMBOL PARAMETER
Input Supply
VDD
UVLO
UVHYST
I
I
SHDNTH Shutdown Threshold
2
DD
DDSHDN
DD
DD
CNTRL
EAOUT
AGND
+
V
I
= 5V, R
LIM
SET
, CS
NC
SS
to GND................................................. – 0.3V to 6V
FB
denotes specifications which apply over the full operating temperature range, otherwise specifications are T
1
2
3
4
5
6
7
8
–
Operating Supply Voltage
Undervoltage Lockout
Hysteresis
Operating Supply Current
Shutdown I
, TEC
32 31 30 29 28 27 26 25
9 10 11 12 13 14 15 16
SLEW
SLEW
T
32-LEAD PLASTIC QFN
PIN 1
TOP VIEW
JMAX
THRM
= V
+
UH PACKAGE
, TEC
= 125 C,
......................................... – 0.3V to 6V
DD
DD
W
, I
, SDSYNC = V
LIM
–
JA
.................................– 0.3V to 6V
, V
= 34 C/W
SET
W W
..................... – 0.3V to 6V
U
24
23
22
21
20
19
18
17
DD
, R
PDRVB
NDRVB
V
V
PGND
NDRVA
PDRVA
CS
DD
DD
T
+
= 10k, C
W
CONDITIONS
Low to High Threshold
High to Low
No Output Load, Outputs Not Switching
SDSYNC = 0V
Measured at PDRVA, PDRVB
U
T
ORDER PART
LTC1923EUH
= 330pF unless otherwise noted.
NUMBER
U
(Note 1)
FAULT, H/C ................................................. – 0.3V to 6V
Operating Temperature Range (Note 2) .. – 40 C to 85 C
Storage Temperature Range ................. – 65 C to 125 C
Lead Temperature (Soldering, 10 sec).................. 300 C
SDSYNC
PLLLPF
CNTRL
EAOUT
R
V
FAULT
AGND
THRM
SLEW
V
V
I
H/C
LIM
SET
TEC
SS
FB
T
JMAX
28-LEAD PLASTIC SSOP
10
11
12
13
14
1
2
3
4
5
6
7
8
9
= 125 C,
GN PACKAGE
TOP VIEW
JA
= 120 C/W
28
27
26
25
24
23
22
21
20
19
18
17
16
15
MIN
R
C
V
PDRVB
NDRVB
V
PGND
NDRVA
PDRVA
CS
CS
I
TEC
TEC
2.7
0.3
TEC
50
T
REF
DD
T
+
–
+
–
TYP
130
2.6
0.8
10
2
A
ORDER PART
LTC1923EGN
= 25 C.
NUMBER
MAX
5.5
2.7
1.4
25
4
UNITS
1923f
mV
mA
V
V
A
V