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LM46001PWPR Switching Regulator IC Positive Adjustable 1V 1 Output
IC REG BUCK ADJ 1A 16HTSSOP
Features of LM46001PWPR
1• 24-µA Quiescent Current in Regulation
• High Efficiency at Light Load (DCM and PFM)
• Meets EN55022/CISPR 22 EMI standards
• Integrated Synchronous Rectification
• Adjustable Switching Frequency: 200 kHz to
2.2 MHz (500 kHz default)
• Frequency Synchronization to External Clock
• Internal Compensation
• Stable With Many Combinations of Ceramic,
Polymer, Tantalum, and Aluminum Capacitors
• Power-Good Flag
• Soft Start into Pre-Biased Load
• Internal Soft Start: 4.1 ms
• Extendable Soft-Start Time by External Capacitor
• Output Voltage Tracking Capability
• Precision Enable to Program System UVLO
• Output Short-Circuit Protection With Hiccup Mode
• Overtemperature Thermal Shutdown Protection
• Create a Custom Design Using the LM46001 With
the WEBENCH® Power Designer
Product Attributes of LM46001PWPR
TYPE | DESCRIPTION |
|---|---|
Category | Integrated Circuits (ICs) Power Management (PMIC) Voltage Regulators - DC DC Switching Regulators |
Mfr | T I |
Series | SIMPLE SWITCHER® |
Product Status | Active |
Function | Step-Down |
Output Configuration | Positive |
Topology | Buck |
Output Type | Adjustable |
Number of Outputs | 1 |
Voltage - Input (Min) | 3.5V |
Voltage - Input (Max) | 60V |
Voltage - Output (Min/Fixed) | 1V |
Voltage - Output (Max) | 28V |
Current - Output | 1A |
Frequency - Switching | 200kHz ~ 2.2MHz |
Synchronous Rectifier | Yes |
Operating Temperature | -40°C ~ 125°C (TJ) |
Mounting Type | Surface Mount |
Package / Case | 16-PowerTSSOP (0.173", 4.40mm Width) |
Supplier Device Package | 16-HTSSOP |
Base Product Number | LM46001 |
| ATTRIBUTE | DESCRIPTION |
|---|---|
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 2 (1 Year) |
| REACH Status | REACH Unaffected |
| ECCN | EAR99 |
| HTSUS | 8542.39.0001 |
Description of LM46001PWPR
The LM46001 regulator is an easy-to-use synchronous step-down DC-DC
converter capable of driving up to 1 A of load current from an
input voltage ranging from 3.5 V to 60 V. The LM46001 provides
exceptional efficiency, output accuracy, and dropout voltage in a
very small solution size. An extended family is available in 0.5-A
and 2-A load current options in pin-to-pin compatible packages.
Peakcurrent-mode control is employed to achieve simple control loop
compensation and cycle-by-cycle current limiting. Optional features
such as programmable switching frequency, synchronization,
power-good flag, precision enable, internal soft start, extendable
soft start, and tracking provide a flexible and easy-touse platform
for a wide range of applications. Discontinuous conduction and
automatic frequency reduction at light loads improve light-load
efficiency. The family requires few external components and pin
arrangement allows simple, optimum PCB layout.
Protection features include thermal shutdown, VCC undervoltage
lockout, cycle-by-cycle current limit, and output short-circuit
protection. The LM46001 device is available in the 16-lead HTSSOP
package (PWP, 6.6 mm × 5.1 mm × 1.2 mm) with 0.65-mm lead pitch.
The device is pin-to-pin compatible with LM46000, LM46002, LM43603,
LM43602, LM43601, and LM43600
