LTC1923EGN View Datasheet(PDF) - Linear Technology
Part Name
Description
Manufacturer
LTC1923EGN Datasheet PDF : 28 Pages
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LTC1923
ABSOLUTE AXI U RATI GS (Note 1)
VDD to GND................................................. – 0.3V to 6V
SDSYNC, RSLEW ......................................... – 0.3V to 6V
FB, CNTRL, VTHRM, ILIM, VSET..................... – 0.3V to 6V
CS +, CS –, TEC+, TEC – .................................– 0.3V to 6V
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
UW U
PACKAGE/ORDER I FOR ATIO
32 31 30 29 28 27 26 25
CNTRL 1
EAOUT 2
PIN 1
TOP VIEW
24 PDRVB
23 NDRVB
FB 3
AGND 4
NC 5
22 VDD
21 VDD
20 PGND
SS 6
19 NDRVA
ILIM 7
VSET 8
18 PDRVA
17 CS +
9 10 11 12 13 14 15 16
ORDER PART
NUMBER
LTC1923EUH
UH PACKAGE
32-LEAD PLASTIC QFN
TJMAX = 125°C, θJA = 34°C/W
EXPOSED PAD IS PGND
(MUST BE SOLDERED TO PCB)
Consult LTC Marketing for parts specified with wider operating temperature ranges.
TOP VIEW
PLLLPF 1
RSLEW 2
SDSYNC 3
CNTRL 4
EAOUT 5
FB 6
AGND 7
SS 8
ILIM 9
VSET 10
FAULT 11
VTHRM 12
H/C 13
VTEC 14
28 RT
27 CT
26 VREF
25 PDRVB
24 NDRVB
23 VDD
22 PGND
21 NDRVA
20 PDRVA
19 CS+
18 CS–
17 ITEC
16 TEC+
15 TEC–
GN PACKAGE
28-LEAD PLASTIC SSOP
TJMAX = 125°C, θJA = 120°C/W
ORDER PART
NUMBER
LTC1923EGN
ELECTRICAL CHARACTERISTICS
The q denotes specifications which apply over the full operating temperature range, otherwise specifications are TA = 25°C.
VDD = 5V, RSLEW = VDD, SDSYNC = VDD, RT = 10k, CT = 330pF unless otherwise noted.
SYMBOL PARAMETER
CONDITIONS
MIN TYP MAX
Input Supply
VDD
Operating Supply Voltage
q 2.7
5.5
UVLO Undervoltage Lockout
Low to High Threshold
q
2.6
2.7
UVHYST Hysteresis
High to Low
q 50
130
IDD
IDDSHDN
SHDNTH
Operating Supply Current
Shutdown IDD
Shutdown Threshold
No Output Load, Outputs Not Switching
SDSYNC = 0V
Measured at PDRVA, PDRVB
2
4
10
25
0.3
0.8
1.4
UNITS
V
V
mV
mA
µA
V
1923f
2
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