GENERAL DEscriptION

The SGM48536/37/38/39/40 are single high-speed lowside gate drivers for MOSFET and IGBT power switches. These devices can provide rail-to-rail driving capability and very small propagation delays (18.5ns, TYP). They also provide 4A peak source current and 8A peak sink current (asymmetrical drive) when VDD = 12V. The input can withstand a maximum negative voltage of -10V.

The operating voltage range is 9V to 25V. The devices feature under-voltage lockout (UVLO) function. After UVLO is triggered, the output remains low. 

The SGM48536 adopts separate output architecture. The separate output structure with asymmetric drive improves the immunity of the device to the parasitic Miller conduction effect and reduces ground bounce.

The SGM48537 adopts a dual-input design. IN+ or IN- can independently control the output of the driver. The unused pin can be functioned as an enable control pin. In order to ensure that the output remains low when an input pin is floating, these input pins have internal pull-up and pull-down resistors. 

The input thresholds of these devices are compatible with low voltage TTL and CMOS logic, which will not be affected by VDD changes. A Schmitt trigger is used at the input, and a wide range of hysteresis voltage is designed to enhance the immunity.

The SGM48536 is available in a Green SOT-23-6 package. The SGM48537/38/39/40 are all available in a Green SOT-23-5 package.

PIN CONFIGURATIONS

FEATURES

• Asymmetrical Drive

  4A Peak Source Current

  8A Peak Sink Current

• TTL and CMOS Compatible Logic Threshold

• Logic Levels Independent of Supply Voltage

• Hysteretic Input Logic for High Noise Immunity

• Outputs are Logic Low When Inputs are Floating

• Negative Voltage Handling Capability:

  -10V DC at Inputs

  -2V, 200ns Pulse for Outputs

• Glitch-Free Operation at Power-Up and Power- Down: Outputs are Pulled Low during Supply UVLO

• Fast Propagation Delay: 18.5ns (TYP)

• Fast Rise Time: 9.5ns (TYP)

• Fast Fall Time: 8ns (TYP)

• Input Pin Absolute Maximum Voltage Levels Not Restricted by VDD Pin Bias Supply Voltage

• -40℃ to +140℃ Operating Temperature Range

• Available in a Green SOT-23-5 Package

APPLICATIONS

Power MOSFETs

IGBT Driving for Power Supplies

DC/DC Converters