LT1937ES5#TRMPBF Linear Technology, LT1937ES5#TRMPBF Datasheet - Page 10

• 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

LT1937
TYPICAL APPLICATIO S
TYPICAL APPLICATIO S
10
3V TO 5V
V
5V
IN
V
IN
C
C
D: CENTRAL CMDSH-3
L: MURATA LQH3C220
IN
OUT
: TAIYO YUDEN JMK107BJ105
C
C
D: CENTRAL CMDSH-3
L: MURATA LQH3C220
C
1 F
IN
OUT
: TAIYO YUDEN GMK212BJ224
IN
: TAIYO YUDEN JMK107BJ105
C
1 F
: TAIYO YUDEN GMK212BJ224
IN
Li-Ion to Five White LEDs
V
SHDN
5V to Seven White LEDs
IN
SHDN
V
LT1937
IN
22 H
GND
L
LT1937
22 H
GND
L
SW
FB
SW
DIMMING
FB
V
DIMMING
DC
D
V
90k
DC
U
U
D
90k
5k
5k
R1
4
R1
4
1937 TA03a
C
0.22 F
OUT
1937 TA04a
C
0.22 F
OUT
70
80
70
65
85
80
75
65
85
75
0
0
V
IN
2
= 3V
Seven LED Efficiency
Five LED Efficiency
V
LOAD CURRENT (mA)
LOAD CURRENT (mA)
IN
5
4
= 3.6V
6
10
8
10
1937 TA03b
1937 TA04b
12
15
1937f