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NCP1550SN33T1 The NCP1550SN33T1 is a step-down DC-DC controller from On Semiconductor. It operates with an input voltage range of 2.45V to 5.5V and a switching frequency of 600kHz.
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NCP1550SN33T1

Available from 1 distributors
Mfr Name: On Semiconductor
On Semiconductor
The NCP1550SN33T1 is a step-down DC-DC controller from On Semiconductor. It operates with an input voltage range of 2.45V to 5.5V and a switching frequency of 600kHz.
✓ Total Stock: 3,600 pcs
$ Price Range: $0.78

NCP1550SN33T1 Available from 1 distributor

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Components Technology Group, Inc. ✓
Non-Authorised Inventory information
3,600 pcs
On Request
3600 pcs On Request 1 On Request On Request On Request On Request On Request
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NCP1550SN33T1 Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Clock Sync
Control Features
Duty Cycle (Max)
Frequency
Function
Mounting Type
Number of Outputs
Operating Temperature
Output Configuration
Output Phases
Output Type
Supplier Device Package
Supplier Package
Synchronous Rectifier
Topology
Voltage
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NCP1550SN33T1 Description

Short technical summary and product information.

The NCP1550SN33T1 is a monolithic micropower, high-frequency voltage-mode step-down DC-DC controller IC designed for battery-operated portable electronic products. It operates in Constant-Frequency PWM mode for low output ripple noise and automatically switches to PFM mode at low output loads for higher efficiency. This controller supports an input voltage range from 2.45 V to 5.5 V and features a 600 kHz PWM switching frequency.

 

Key electrical specifications include a maximum duty cycle of 100%, a typical efficiency of 92%, and a low quiescent bias current of 50 µA in PFM mode with no load. It offers output voltage options from 1.8 V to 3.3 V with high accuracy of ±2.0% and low output voltage ripple of 50 mV typical. The device includes features like Chip Enable with an internal pullup current source, built-in soft-start, and internal undervoltage lockout (UVLO) protection.

 

The NCP1550SN33T1 is available in a micro miniature TSOP-5 package, suitable for applications requiring minimum external components and board space. Typical applications include Personal Digital Assistants (PDAs), camcorders, digital still cameras, hand-held instruments, and distributed power systems. It is designed for conversion from battery sources like NiMH, NiCd, or Lithium-ion cells to regulated output voltages.

NCP1550SN33T1 Quick Information

Product Type: DC DC Switching Controller
Canonical Name: NCP1550 Step-Down DC-DC Controller
Subcategory: Power Management

NCP1550SN33T1 Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected
Lead Free: Pb-Free

NCP1550SN33T1 Estimated Pricing

Qty Low High
1+ $0.78 $0.78

Estimated market price range - modelled values for guidance only, not live distributor offers.

NCP1550SN33T1 Features

  • Monolithic micropower step-down controller.
  • Operates at 600 kHz PWM switching frequency.
  • Automatic PWM/PFM mode switchover.
  • Input voltage range 2.45V to 5.5V.
  • Available in a TSOP-5 package.

NCP1550SN33T1 Applications

  • Ideal for battery-operated devices.
  • Suitable for portable electronic products.
  • Used in PDAs and cameras.
  • Supports distributed power systems.
  • Efficient power conversion from battery cells.

NCP1550SN33T1 FAQs

7 frequently asked questions generated from this part’s specifications.
What is the input voltage range of the NCP1550SN33T1?

2.45 V to 5.5 V.

What package is the NCP1550SN33T1 available in?

SOT-23-5 Thin, TSOT-23-5 (5-TSOP).

What is the operating temperature range of the NCP1550SN33T1?

-40°C to 85°C.

What is the switching frequency of the NCP1550SN33T1?

600 kHz.

What output voltage options are available?

1.8 V to 3.3 V.

What is the typical efficiency of the NCP1550SN33T1?

92%.

Does the NCP1550SN33T1 have built-in soft-start?

Yes, built-in soft-start is included.

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