Series: -
Buck: Yes
Inverting: No
Doubler: No
Divider: No
Cuk: No
Isolated: No
Operating Temperature: 0°C ~ 70°C
PWM Type: Current Mode
Number of Outputs: 1
Duty Cycle: 100%
Package / Case: 16-DIP (0.300", 7.62mm)
Packaging: Tube
Boost: No
Flyback: No
Manufacturer: Linear Technology
Frequency - Max: 250kHz
Voltage - Supply: Up to 48V
Pinout
DescriptionThe LTC1149CN is one member of the LTC1147 family which is designed as the high efficiency step-down switching regulator controller that can be used in (1)notebook and palmtop computers; (2)portable instruments; (3)battery-operated digital devices; (4)industrial power distribution; (5)avionics systems; (6)telecom power supplies. And this device incorporates automatic power saving Burst Mode operation to reduce switching losses when load currents drop below the level required for continuous operation.
Features of the LTC1149CN are:(1)operation to 48V input voltage; (2)ultra high efficiency: up to 95%; (3)current-mode operation for excellent line and load transient response; (4)high efficiency maintained over wide current range; (5)logic controlled micropower shutdown; (6)short-circuit protection; (7)very low dropout operation: 100% duty cycle; (8)synchronous FET switching for high efficiency; (9)adaptive non-overlap gate drives; (10)available in 16-pin narrow SO package.
The absolute maximum ratings of the LTC1149CN can be summarized as:(1)input supply voltage:-15 V to 60 V;(2)continuous output current:50 mA;(3)sense voltages (pins 8, 9):-0.3 V to Vcc;(4)operating ambient temperature range:0°C to 70°C;(5)extended commercial temperature range:-40°C to 85°C;(6)junction temperature:125°C;(7)storage temperature range:-65°C to 150°C;(8)lead temperature (soldering, 10 sec):300°C. If you want to know more information such as the electrical characteristics about the LTC1149CN, please download the datasheet in www.seekic.com or www.chinaicmart.com.
Parameters: | Technical/Catalog Information | LTC1149CN |
| Vendor | Linear Technology |
| Category | Integrated Circuits (ICs) |
| Type | Step-Down (Buck) |
| Number of Outputs | 1 |
| Voltage - Input | 0 ~ 48 V |
| Voltage - Output | Adjustable |
| Current - Output | 50mA |
| Power - Output | - |
| Package / Case | 16-DIP (300 mil) |
| Packaging | Tube |
| Internal Switch(s) | No |
| Synchronous | Yes |
| Rds (On) | - |
| Operating Temperature | 0°C ~ 70°C |
| Frequency - Switching | 250kHz |
| Drawing Number | 161; 05-08-1510; N; 8 |
| Lead Free Status | Contains Lead |
| RoHS Status | RoHS Non-Compliant |
| Other Names | LTC1149CN
LTC1149CN
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LTC1149CN Data Sheet
