Packaging information
| Package | Pins HTSSOP (PWP) | 20 |
| Operating temperature range (°C) -40 to 125 |
| Package qty | Carrier 2,500 | LARGE T&R |
Features for the LM26420-Q1
- Qualified for automotive applications
- AEC Q100-qualified with the following results:
- Device temperature grade 0 (Q0): –40°C to +150°C ambient operating temperature
- Device temperature grade 1 (Q1): –40°C to +125°C ambient operating temperature
- Functional Safety-Capable
- Compliant with CISPR25 class 5 conducted emissions
- Input voltage range of 3 V to 5.5 V
- Output voltage range of 0.8 V to 4.5 V
- 2-A Output current per regulator
- Fixed 2.2-MHz switching frequency
- 0.8 V, 1.5% Internal voltage reference
- Internal soft start
- Independent power good and precision enable for each output
- Current mode, PWM operation
- Thermal shutdown
- Overvoltage protection
- Start-up into prebiased output loads
- Regulators are 180° out of phase
- Create a custom design using the LM26420-Q1 with the WEBENCH® Power Designer
Description for the LM26420-Q1
The LM26420-Q1 regulator is a monolithic, high-efficiency dual PWM step-down DC/DC converter. This device has the ability to drive two 2-A loads with an internal 75-mΩ PMOS top switch and an internal 50-mΩ NMOS bottom switch using state-of-the-art BICMOS technology results in the best power density available. The world-class control circuitry allow on times as low as 30 ns, thus supporting exceptionally high-frequency conversion over the entire 3-V to 5.5-V input operating range down to the minimum output voltage of 0.8 V.
Although the operating frequency is high, efficiencies up to 93% are easy to achieve. External shutdown is included, featuring an ultra-low standby current. The LM26420-Q1 utilizes current-mode control and internal compensation to provide high performance regulation over a wide range of operating conditions.
Because its switching frequency is ensured to be greater than 2 MHz, the LM26420-Q1 can be used in automotive applications without causing interference in the AM frequency band.