LT1937ES5#TRMPBF Linear Technology, LT1937ES5#TRMPBF Datasheet - Page 2

• Manufacturer Part Number: LT1937ES5#TRMPBF
• Description: IC LED DRIVR WHITE BCKLGT TSOT-5
• Manufacturer: Linear Technology
• Type: Backlight, White LEDr

Specifications of LT1937ES5#TRMPBF

• Constant Current: Yes
• Topology: PWM, Step-Up (Boost)
• Number Of Outputs: 1
• Internal Driver: Yes
• Type - Primary: Backlight
• Type - Secondary: White LED
• Frequency: 800kHz ~ 1.6MHz
• Voltage - Supply: 2.5 V ~ 10 V
• Voltage - Output: 36V
• Mounting Type: Surface Mount
• Package / Case: TSOT-23-5, TSOT-5, TSOP-5
• Operating Temperature: -40°C ~ 85°C
• Current - Output / Channel: 15mA
• Internal Switch(s): Yes
• Efficiency: 84%
• No. Of Outputs: 1
• Output Current: 320mA
• Output Voltage: 36V
• Dimming Control Type: PWM
• Operating Temperature Range: -40°C To +85°C
• Driver Case Style: TSOT-23
• Switching Frequency: 1.2MHz
• Rohs Compliant: Yes
• Operating Supply Voltage (typ): 3.3/5/9V
• Number Of Segments: 6
• Operating Temperature (min): -40C
• Operating Temperature (max): 85C
• Operating Temperature Classification: Industrial
• Package Type: TSOT-23
• Pin Count: 5
• Mounting: Surface Mount
• Operating Supply Voltage (min): 2.5V
• Operating Supply Voltage (max): 10V
• Led Driver Application: Cell Phones, PDA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: LT1937ES5#TRMPBFTR

PACKAGE/ORDER I FOR ATIO
ABSOLUTE AXI U RATI GS
LT1937
Input Voltage (V
SW Voltage ............................................................. 36V
FB Voltage .............................................................. 10V
SHDN Voltage ......................................................... 10V
Consult LTC Marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS
PARAMETER
Minimum Operating Voltage
Maximum Operating Voltage
Feedback Voltage
FB Pin Bias Current
Supply Current
Switching Frequency
Maximum Duty Cycle
Switch Current Limit
Switch V
Switch Leakage Current
SHDN Voltage High
SHDN Voltage Low
SHDN Pin Bias Current
Note 1: Absolute Maximum Ratings are those values beyond which the life
of the device may be impaired.
2
JA
T
JMAX
= 120 C ON BOARD OVER GROUND PLANE
GND 2
CESAT
SW 1
= 125 C,
FB 3
5-LEAD PLASTIC TSOT-23
S5 PACKAGE
TOP VIEW
JA
= 256 C/ W IN FREE AIR
IN
W
) ................................................. 10V
5 V
4 SHDN
IN
W W
U
S5 PART MARKING
ORDER PART
LT1937ES5
W
NUMBER
CONDITIONS
I
SHDN = 0V
I
V
LTYN
SW
SW
U
SW
= 100mA, Duty Cycle = 66%
= 250mA
= 5V
T
A
U
= 25 C, V
(Note 1)
Extended Commercial
Operating Temperature Range (Note 2)... – 40 C to 85 C
Maximum Junction Temperature .......................... 125 C
Storage Temperature Range ................. – 65 C to 150 C
Lead Temperature (Soldering, 10 sec).................. 300 C
Note 2: The LT1937E 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.
IN
JA
T
= 3V, V
JMAX
= 150 C ON BOARD OVER GROUND PLANE
GND 2
SW 1
= 125 C,
FB 3
6-LEAD PLASTIC SC70
SHDN
SC6 PACKAGE
TOP VIEW
JA
= 3V, unless otherwise noted.
= 256 C/ W IN FREE AIR
6 V
5 GND
4 SHDN
IN
MIN
2.5
0.8
1.5
86
10
85
SC6 PART MARKING
0.01
TYP
320
350
1.9
0.1
1.2
95
45
90
65
ORDER PART
LT1937ESC6
NUMBER
LAAB
MAX
104
100
2.5
1.0
1.6
0.4
10
5
UNITS
MHz
1937f
mV
mA
mV
mA
nA
%
V
V
A
A
V
V
A