TLF50241EL_15 Datasheet, PDF (2/30 Pages) Marl International Limited – 2.2 MHz Step-Down Regulator 500 mA, 5 V, low quiescent current

2.2 MHz Step-Down Regulator 500 mA, 5 V
Low quiescent current
TLF50241EL
TLF50241EL
1
Overview
• 500 mA step down voltage regulator
• 5 V Output voltage
• ± 2% output voltage tolerance
• Low quiescent current (less than 45µA at nominal battery voltage)
• Integrated power transistor
• Current mode PWM regulation
• PFM mode for light load current
• Input voltage range from 4.75V to 45V
• 2.2 MHz switching frequency
• 100% Duty cycle
• Synchronization input
• Soft-start function
• Reset generator
• Input undervoltage lockout
• Suited for automotive applications: T_j = -40 °C to +150 °C
• Green Product (RoHS compliant)
• AEC Qualified
PG-SSOP-14
Description
The TLF50241EL is a high frequency PWM step-down DC/DC converter with an integrated PMOS power switch,
packaged in a small PG-SSOP-14 with exposed pad. The wide input voltage range from 4.75 to 45 V makes the
TLF50241EL suitable for a wide variety of applications. The device is designed to be used under harsh automotive
environmental conditions.
The switching frequency of nominal 2.2 MHz allows the use of small and cost-effective inductors and capacitors,
resulting in a low, predictable output voltage ripple and in minimized consumption of board space.
In light load condition the device operates in Pulse Frequency Modulation (PFM) to optimize the efficiency.
Between the single pulses, all internal controlling circuitry is switched off to reduce the internal power consumption.
Type
TLF50241EL
Package
PG-SSOP-14
Marking
TLF50241
Data Sheet
2
Rev. 1.0, 2013-06-19