CAT4237TD-GT3 ON Semiconductor, CAT4237TD-GT3 Datasheet - Page 2

• Manufacturer Part Number: CAT4237TD-GT3
• Description: IC LED DRVR WHT BCKLGHT TSOT23-5
• Manufacturer: ON Semiconductor
• Type: Backlight, White LEDr

Specifications of CAT4237TD-GT3

• Constant Current: Yes
• Topology: PWM, Step-Up (Boost)
• Number Of Outputs: 1
• Internal Driver: Yes
• Type - Primary: Backlight
• Type - Secondary: White LED
• Frequency: 800kHz ~ 1.3MHz
• Voltage - Supply: 2.8 V ~ 5.5 V
• Voltage - Output: 30V
• Mounting Type: Surface Mount
• Package / Case: TSOT-23-5, TSOT-5, TSOP-5
• Operating Temperature: -40°C ~ 85°C
• Current - Output / Channel: 40mA
• Internal Switch(s): Yes
• Efficiency: 87%
• Number Of Digits: 8
• Low Level Output Current: 1 mA
• High Level Output Current: 40 mA
• Operating Supply Voltage: 2.8 V to 5.5 V
• Maximum Supply Current: 1.5 mA
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: CAT4237TD-GT3TR

Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the
Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect
device reliability.
NOTE:
3. Thin SOT23−5 package thermal resistance q
Table 1. ABSOLUTE MAXIMUM RATINGS
Table 2. RECOMMENDED OPERATING CONDITIONS
V
SW pin voltage
Ambient Temperature Range
6, 7 or 8 LEDs
V
SHDN voltage
SW voltage
Storage Temperature Range
Junction Temperature Range
Lead Temperature
IN
IN
, FB voltage
Typical application circuit with external components is shown above.
Parameters
Parameters
3 V to
V
4.2 V
IN
4.7 mF
OFF
C
1
ON
L: Sumida CDRH3D16−330
D: Central CMDSH05−4 (rated 40 V)
C2: Taiyo Yuden UMK212BJ224 (rated 50 V)
Figure 1. Typical Application Circuit
JA
= 135°C/W when mounted on board over a ground plane.
VIN
SHDN
CAT4237
33 mH
GND
http://onsemi.com
L
SW
FB
2
V
FB
0.22 mF
D
= 300 mV
C
2
V
OUT
−65 to +160
−40 to +150
−0.3 to +55
−40 to +85
−0.3 to +7
−0.3 to +7
15 W
2.8 to 5.5
Ratings
Range
0 to 30
1 to 40
R
300
1
20 mA
Units
Units
mA
_C
_C
_C
_C
V
V
V
V
V