LTC1574-5 View Datasheet(PDF) - Linear Technology
Part Name
Description
MFG CO.
'LTC1574-5' PDF : 8 Pages View PDF
LTC1574
LTC1574-3.3/LTC1574-5
ABSOLUTE MAXIMUM RATINGS
(Voltage Referred to GND Pin)
Input Supply Voltage (Pin 5).................. – 0.3V to 18.5V
Switch Current (Pin 3, 14) ........................................ 1A
Switch Voltage (Pin 3, 14) .......................... VIN – 18.5V
Operating Temperature Range .................... 0°C to 70°C
Junction Temperature (Note 1) ............................ 125°C
Storage Temperature Range ................. – 65°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300°C
PACKAGE/ORDER INFORMATION
NC 1
GND 2
SW 3
GND 4
VIN 5
IPGM 6
SHDN 7
NC 8
TOP VIEW
16 NC
15 GND
14 SW
13 GND
12 LBIN
11 LBOUT
10 VOUT (VFB*)
9 NC
ORDER PART
NUMBER
LTC1574CS
LTC1574CS-3.3
LTC1574CS-5
S PACKAGE
16-LEAD PLASTIC SO
*ADJUSTABLE OUTPUT VERSION
TJMAX = 125°C, θJA = 110°C/W
Consult factory for Industrial and Military grade parts.
ELECTRICAL CHARACTERISTICS TA = 25°C, VIN = 9V, VSHUTDOWN = VIN, IPGM = 0V, unless otherwise specified.
SYMBOL PARAMETER
IFB
Feedback Current into Pin 10
VFB
Feedback Voltage
VOUT Regulated Output Voltage
∆VOUT
Output Voltage Line
Regulation
Output Voltage Load
Regulation
IQ
VLBTRIP
ILBIN
ILBOUT
Input DC Supply Current (Note 3)
Active Mode
Sleep Mode
Shutdown (Note 4)
Low-Battery Trip Point
Current into Pin 12
Current Sunk by Pin 11
VHYST
IPEAK
Comparator Hysteresis
Current Limit
RON
ON Resistance of Switch
tOFF
Switch Off Time
VIH
Shutdown Pin High
VIL
Shutdown Pin Low
IIH
Shutdown Pin Input Current
CONDITIONS
LTC1574
LTC1574
LTC1574-3.3
LTC1574-5
VIN = 6V to 12V, ILOAD = 100mA, IPGM = VIN (Note 2)
LTC1574-3.3 (Note 2)
LTC1574-5 (Note 2)
20mA < ILOAD < 175mA, IPGM = 0V
20mA < ILOAD < 400mA, IPGM = VIN
20mA < ILOAD < 175mA, IPGM = 0V
20mA < ILOAD < 400mA, IPGM = VIN
4V < VIN < 16V, IPGM = 0V
4V < VIN < 16V
VSHUTDOWN = 0V, 4V < VIN < 16V
VLBOUT = 0.4V, VLBIN = 0V
VLBOUT = 5V, VLBIN = 10V
IPGM = VIN, VOUT = 0V
IPGM = 0V, VOUT = 0V
VOUT at Regulated Value
Minimum Voltage at Pin 7 for Device to Be Active
Maximum Voltage at Pin 7 for Device to Be in Shutdown
VSHUTDOWN = 16V
MIN TYP MAX UNITS
1
µA
q 1.20 1.25 1.30
V
q 3.14 3.30 3.46
V
q 4.75 5.00 5.25
V
10 70
mV
– 5 – 70
mV
– 45 – 70
mV
– 5 – 70
mV
– 50 – 70
mV
450 600
µA
130 180
µA
2
25
µA
1.25 1.4
V
0.5
µA
0.5 1.0 1.5
mA
1.0
µA
7.5 15 30
mV
q 0.54 0.60 0.78
A
q 0.27 0.34 0.50
A
q
0.9 1.55
Ω
3
4
5
µs
1.2
V
0.75
V
2
µA
2
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