LT1932 Linear Technology, LT1932 Datasheet - Page 2

• Manufacturer Part Number: LT1932
• Description: Constant-Current/ Constant-Voltage 1.4MHz Step-Up DC/DC Converter
• Manufacturer: Linear Technology

ABSOLUTE AXI U RATI GS
LT1932
(Note 1)
V
SHDN Voltage ......................................................... 10V
SW Voltage ............................................................. 36V
LED Voltage ............................................................. 36V
R
Junction Temperature .......................................... 125 C
Operating Temperature Range (Note 2) .. – 40 C to 85 C
Storage Temperature Range ................. – 65 C to 150 C
Lead Temperature (Soldering, 10 sec).................. 300 C
ELECTRICAL CHARACTERISTICS
range, otherwise specifications are at T
PARAMETER
Minimum Input Voltage
Quiescent Current
R
LED Pin Voltage
LED Pin Current
LED Pin Current Temperature Coefficient
Switching Frequency
Maximum Switch Duty Cycle
Switch Current Limit
Switch V
SHDN Pin Current
Start-Up Threshold (SHDN Pin)
Shutdown Threshold (SHDN Pin)
Switch Leakage Current
Note 1: Absolute Maximum Ratings are those values beyond which the life of
a device may be impaired.
Note 2: The LT1932E is guaranteed to meet specifications from 0 C to 70 C.
Specifications over the – 40 C to 85 C operating temperature range are
assured by design, characterization and correlation with statistical process
controls.
2
SET
IN
SET
Voltage ............................................................. 10V
Pin Voltage
Voltage ............................................................. 1V
CESAT
W
W W
A
= 25 C. V
CONDITIONS
V
V
R
R
R
R
R
R
I
V
I
V
V
Switch Off, V
U
IN
LED
SW
RSET
SHDN
IN
SHDN
SHDN
SET
SET
SET
SET
SET
SET
= 1.2V, V
= 1V
= 300mA
= 15mA
= 1.50k
= 1.50k, V
= 562 , V
= 750 , V
= 1.50k, V
= 4.53k, V
= 0.2V
= 0V
= 0V
= 2V
The
SW
SHDN
IN
IN
IN
IN
IN
= 5V
denotes specifications that apply over the full operating temperature
< V
= 1.2V
= 1.2V
= 1.5V
= 1.2V
= 1.2V, unless otherwise noted.
OUT
PACKAGE/ORDER I FOR ATIO
Consult LTC Marketing for parts specified with wider operating temperature
ranges.
(Figure 1)
GND 2
LED 3
SW 1
T
JMAX
6-LEAD PLASTIC SOT-23
= 125 C,
S6 PACKAGE
TOP VIEW
JA
= 250 C/ W
6 V
5 SHDN
4 R
IN
SET
MIN
12.5
0.85
400
0.8
34
26
90
U
S6 PART MARKING
– 0.02
0.01
TYP
100
120
550
150
1.2
0.1
1.2
ORDER PART
38
30
15
95
15
5
0
LT1932ES6
NUMBER
W
LTST
MAX
17.5
0.25
180
780
200
1.6
1.0
1.6
0.1
42
34
30
1
5
UNITS
mA/ C
U
MHz
mA
mV
mV
mA
mA
mA
mA
mA
mV
%
V
A
A
A
V
V
A