DESCRIPTION
The family of highly flexible, easy to use PFM controllers is ideal for the use in wide input range switching regulator applications. An advanced PFM control scheme gives these devices the benefits of PWM converters with high efficiency for heavy loads, while us ing very low operating current for light loads to maintain excel lent behaviour with output load variation.
The  switching  circuits  are  suitable  for  topologies  requiring  low side FET, such as boost, flyback, Sepic, etc. Depending on the utilized topology the controllers are capable of producing regulated positive or negative output voltage.
Operating from 3V to 60V supply and in temperature ranges from – 40°C to + 125°C the device is well suited for automotive applications. Requiring a minimum number of external components,
these regulators are simple to use and cost-saving.

FEATURES
Supply voltage range VS 3V to 60V
Up to 90% efficiency
40µA standby current
180µA circuit operating current
1.5V to 24V or more adjustable output voltage
Up to 300kHz switching frequency
Improved current-limited PFM control scheme
High current driver for external MOSFET
Under-voltage lockout and thermal shutdown
– 40°C to + 125°C operating temperature
SO8n package
910.26 basis version
910.24additive with peak current halving for medium loads and extended max. switch-on-time
910.25additive with peak current halving for medium loads and extended max. switch-on-time and fault protection

APPLICATION
Minimum component DC-DC converters
14V, 28V or 42V automotive systems
Power conditioning for portable equipment
High efficiency on-card switching regulators