1 Features
• AEC-Q100 qualified:
– Device temperature grade 1: –40°C to +125°C
ambient operating temperature range
• Functional Safety-Capable
– Documentation available to aid functional safety
system design
• Input voltage range: 1.8V to 20V
• Output voltage range: 4.5V to 28V
• Integrated low-side FET: 200mΩ
• High efficiency
– Up to 89.7% efficiency at VIN = 5V to VOUT =
12V, and IOUT = 0.25A
– Up to 90.4% efficiency at VIN = 12V to VOUT =
28V, and IOUT = 0.35A
• Peak switch current limit: 2.2A
• Switching frequency: 2.4MHz
• Reference voltage accuracy: ±2.0%
• Typical quiescent current: 25μA
• Typical shutdown current: 0.4μA
• PFM operation mode at light load
• Internal compensation
• Internal soft start time: 2.5ms
• Cycle-by-cycle current limit
• Thermal shutdown protection
• SOT-23-5 DDC package

2 Applications
• LED power supply
• Digital still camera
• GPS devices
• Mobile phone
• OLED panel power supply
• USB-powered devices

3 Description
The TLV61047-Q1 is a high-voltage, non-synchronous
boost converter that integrates a 200mΩ low side
power switch to provide an easy use and small size
power design. The TLV61047-Q1 has a wide input
voltage range from 1.8V to 20V and output voltage
covers up to 28V with 2.2A switch current capability.
The TLV61047-Q1 uses adaptive constant off-time
peak current control topology to regulate the output
voltage. At heavy to light load condition, the
TLV61047-Q1 works in pulse width modulation (PWM)
mode until trigger the minimum peak current (typical
300mA). At lighter load condition , the devices work in
pulse frequency modulation (PFM) mode to improve
the efficiency and ripple performance.
The quasi-constant switching frequency is internally
set to 2.4MHz, allowing the use of extremely
small surface mount inductor and capacitors. The
TLV61047-Q1 has built in 2.5ms soft start to minimize
the inrush current during start-up. Additional features
include internal compensation, cycle-by-cycle current
limit, and thermal shutdown.
The TLV61047-Q1 is available in an SOT-23-5 DDC
package.