LM26420XSQ/NOPB Dual 2.0A Hi Freq Sync SD DC-DC Reg Adjustable Voltage Regulator
microchip battery management
,power management integrated circuit
LM26420XSQ/NOPB Power Path Management IC Switching Voltage Regulators Dual 2.0A Hi Freq Sync SD DC-DC Reg
1 Features
- Compliant with CISPR25 Class 5 Conducted Emissions
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Input Voltage Range of 3 V to 5.5 V
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Output Voltage Range of 0.8 V to 4.5 V
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2-A Output Current per Regulator
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High Switching Frequency: 2.2 MHz (LM26420X) 0.55 MHz (LM26420Y)
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0.8 V, 1.5% Internal Voltage Reference
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Internal Soft Start
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Independent Power Good and Precision Enable for Each Output
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Current Mode, PWM Operation
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Thermal Shutdown
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Overvoltage Protection
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Start-up into Prebiased Output Loads
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Regulators are 180° Out of Phase
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Create a Custom Design Using the LM26420 With the WEBENCH® Power Designer
2 Applications
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Local 5 V to Vcore of FPGAs
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Core Power in HDDs and Set-Top Boxes
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USB Powered Devices
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Powering Core and I/O Voltages for CPUs and ASICs
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3 Description
The LM26420 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 utilizes current-mode control and internal compensation to provide high performance regulation over a wide range of operating conditions.
Device Information
|
PART NUMBER |
PACKAGE |
BODY SIZE (NOM) |
|
LM26420 |
HTSSOP (20) |
6.50 mm × 4.40 mm |
|
WQFN (16) |
4.00 mm × 4.00 mm |
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