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Product Detailed Parameters
- Description：IC REG BST CHARGE PUMP ADJ 8MSOP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube
- Function：Step-Up, Step-Up/Step-Down
- Output Configuration：Positive or Negative
- Topology：Boost, Charge Pump, Cuk, SEPIC
- Output Type：Adjustable
- Number of Outputs：1
- Voltage - Input (Min)：2.55V
- Voltage - Input (Max)：40V
- Voltage - Output (Min/Fixed)：0.003V, 1.204V
- Voltage - Output (Max)：65V (Switch)
- Current - Output：375mA (Switch)
- Frequency - Switching：200kHz ~ 1.5MHz
- Synchronous Rectifier：No
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad
- Supplier Device Package：8-MSOP-EP
- Grade：-
- Qualification：-
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Overview
The LT8570EMS8E-1#PBF is a PWM DC/DC converter featuring an integrated 0.25A, 65V power switch. It supports Boost, SEPIC, and Inverting topologies with an input voltage range of 2.55V to 40V. The device offers an adjustable oscillator set between 200kHz and 1.5MHz via an external resistor or synchronization to an external clock. It operates within a temperature range of -40°C to +125°C in an MSOP-8 package.
Feature Summary
- Configurable as Boost, SEPIC, or Inverting DC/DC converter
- Integrated 65V power switch rated at 0.25A
- Adjustable switching frequency from 200kHz to 1.5MHz
- Synchronization capability for external clock input
Applications
- Generating 12V output from 5V to 12V input using Boost topology
- Generating -48V output from 12V input using Inverting topology
- Generating -15V output from 5V to 35V input using Inverting topology
- Generating 24V output from 5V to 12V input using Boost topology
Procurement Notes
Verify the specific suffix #PBF indicates tube packaging versus TRPBF for tape and reel when sourcing. Confirm the manufacturer part number matches Analog Devices Inc. specifications. Ensure the MSOP-8 package type aligns with board layout requirements. Check RoHS compliance status against current regulatory standards. Validate the operating temperature range meets application thermal constraints.
Selection Notes
Select this component for applications requiring flexible topology configuration including boost, SEPIC, or inverting modes. The 65V switch rating allows for high step-up ratios. Consider the 0.25A current limit for load requirements. The wide input range suits various supply voltages. External clock synchronization is available for noise management.
Part Context
This part belongs to the LT8570 family of PWM DC/DC converters. The LT8570 variant features a 0.5A switch, while the LT8570-1, which includes the EMS8E-1 model, utilizes a 0.25A switch. Both share similar control architectures and pinouts but differ in current handling capabilities. The series supports multiple conversion topologies.
Replacement Considerations
LT8570IMS8E-1#TRPBF serves as a direct functional substitute with identical electrical characteristics. The primary difference lies in the packaging format; the IMS8E-1#TRPBF uses tape and reel packaging instead of tubes. Verify compatibility with existing assembly processes.
