Features: Integrated 40V, N-Channel buck switch Integrated start-up regulator Input Voltage Range: 8V to 36VNo loop compensation requiredUltra-Fast transient response Operating frequency remains constant with load current and input voltage Maximum Duty Cycle Limited During Start-Up Adjustable outp...
LM34910: Features: Integrated 40V, N-Channel buck switch Integrated start-up regulator Input Voltage Range: 8V to 36VNo loop compensation requiredUltra-Fast transient response Operating frequency remains con...
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VIN to GND BST to GND SW to GND (Steady State) ESD Rating (Note 2) Human Body Model BST to VCC VIN to SW BST to SW VCC to GND SGND to RTN Current out of ISEN SS to RTN All Other Inputs to GND Storage Temperature Range JunctionTemperature |
40V 50V -1.5V 2kV 40V 40V 14V 14V -0.3V to +0.3V See Text -0.3V to 4V -0.3 to 7V -55°C to +150°C 150°C |
Output Current | 1250 mA |
Input Min Voltage | 8 Volt |
Input Max Voltage | 36 Volt |
Output Min | 2.5 Volt |
Output Max | 33 Volt |
Frequency Min | Undefined kHz |
Frequency Max | 1000 kHz |
Efficiency (peak) | 92 % |
On/Off Pin | Yes |
Error Flag | No |
SoftStart | Yes |
Sync Pin | No |
Inverting | Yes |
Flyback | No |
RegType | Switching Regulator |
Temperature Min | -40 deg C |
Temperature Max | 125 deg C |
Adjustable Output | Yes |
Adj Switch Frequency | Yes |
PWM Mode | Constant on-time |
Topology | Buck |
Special Features | No compensation required; ultra-fast transient response |
Step-Down | Yes |
Multiple Output Capability | No |
Output Power | Undefined Watt |
Output Voltage | Undefined Volt |
Output Range | 2.5V to 33V |
Switching Frequency | 1000 kHz |
Feedback Voltage | 2.5 Volt |
Regulator Family | Undefined |
AEC Q-100 Automotive Grade | Undefined |
Synchronous Rectification | No |
View Using Catalog |
The LM34910 Step Down Switching Regulator features all of the functions needed to implement a low cost, efficient, buck bias regulator capable of supplying 1.25A to the load. This buck regulator contains a 40V N-Channel Buck Switch, and is available in the thermally enhanced LLP-10 package. The hysteretic regulation scheme requires no loop compensation, results in fast load transient response, and simplifies circuit implementation. The operating frequency remains constant with line and load variations due to the inverse relationship between the input voltage and the on-time. The current limit detection is set at 1.25A. Additional features include: VCC under-voltage lockout, thermal shutdown, gate drive under-voltage lockout, and maximum duty cycle limiter.