ST1845

Active
Design Win

Rad-tolerant current mode PWM controller

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Product overview

Description

The ST1843 and ST1845 ICs are rad-hard current mode PWM controllers providing an industry standard solution for the implementation of off-line or DC to DC fixed-frequency current mode control schemes with a minimal external part count. Its radiation hardness, hermetic packaging and its ESCC qualification make it an ideal choice for aerospace and other harsh environments.
  • All features

    • Oscillator frequency guaranteed at 250 kHz
    • Trimmed oscillator for precise frequency control
    • Current mode operation to 500 kHz automatic feed forward compensation
    • Latching PWM for cycle-by-cycle current limiting
    • Internally trimmed reference with undervoltage lockout
    • High current totem pole output
    • Undervoltage lockout with hysteresis
    • Low start-up (<0.5 mA) and operating current
    • Ceramic hermetic package Flat-8 metallic lid floating
    • ST1843 50 krad (Si)
    • ST1845 100 krad (Si)
    • SEL free @ 120 MeV/cm2/mg at 125 °C
    • ESCC qualified as 9108/020 and 9108/021

EDA Symbols, Footprints and 3D Models

STMicroelectronics - ST1845

Speed up your design by downloading all the EDA symbols, footprints and 3D models for your application. You have access to a large number of CAD formats to fit with your design toolchain.

Symbols

Symbols

Footprints

Footprints

3D model

3D models

Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
ST1845K1
Active
Flat-8 Industrial N/A
ST1845RKG
Active
Flat-8 Industrial N/A
ST1845RKT
Active
Flat-8 Industrial N/A

ST1845K1

Package:

Flat-8

Material Declaration**:

Marketing Status

Active

Package

Flat-8

Grade

Industrial

RoHS Compliance Grade

N/A

ST1845RKG

Package:

Flat-8

Material Declaration**:

Marketing Status

Active

Package

Flat-8

Grade

Industrial

RoHS Compliance Grade

N/A

ST1845RKT

Package:

Flat-8

Material Declaration**:

Marketing Status

Active

Package

Flat-8

Grade

Industrial

RoHS Compliance Grade

N/A

(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.

Sample & Buy

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Part Number
Order from distributors
Order from ST
Marketing Status
ECCN (US)
ECCN (EU)
Packing Type
Package
Temperature (°C) SMD PIN/Detailed Spec
Budgetary Price (US$)*/Qty
Quality Level
Lead Finish
Package: Product Marking
Country of Origin
min
max
ST1845K1 No availability of distributors reported, please contact our sales office
Active
EAR99 NEC Carrier Tape Flat-8 - - -

Engineering Model

Gold

ST1845K1

FRANCE

ST1845RKG No availability of distributors reported, please contact our sales office
Active
EAR99 NEC Carrier Tape Flat-8 - - 9108/021/01R

ESCC Flight

Gold

9108/021/01R

FRANCE

ST1845RKT No availability of distributors reported, please contact our sales office
Active
EAR99 NEC Carrier Tape Flat-8 - - 9108/021/02R

ESCC Flight

Solder dip

9108/021/02R

FRANCE

ST1845K1 Active

Package:
Flat-8
ECCN (US):
EAR99

Part Number:

ST1845K1

ECCN (EU):

NEC

Packing Type:

Carrier Tape

Operating Temperature (°C)

Min:

-

Max:

-

SMD PIN/Detailed Spec:

-

Quality Level:

Engineering Model

Lead Finish:

Gold

Package: Product Marking:

ST1845K1

Country of Origin:

FRANCE

No availability of distributors reported, please contact our sales office

ST1845RKG Active

Package:
Flat-8
ECCN (US):
EAR99

Part Number:

ST1845RKG

ECCN (EU):

NEC

Packing Type:

Carrier Tape

Operating Temperature (°C)

Min:

-

Max:

-

SMD PIN/Detailed Spec:

9108/021/01R

Quality Level:

ESCC Flight

Lead Finish:

Gold

Package: Product Marking:

9108/021/01R

Country of Origin:

FRANCE

No availability of distributors reported, please contact our sales office

ST1845RKT Active

Package:
Flat-8
ECCN (US):
EAR99

Part Number:

ST1845RKT

ECCN (EU):

NEC

Packing Type:

Carrier Tape

Operating Temperature (°C)

Min:

-

Max:

-

SMD PIN/Detailed Spec:

9108/021/02R

Quality Level:

ESCC Flight

Lead Finish:

Solder dip

Package: Product Marking:

9108/021/02R

Country of Origin:

FRANCE

No availability of distributors reported, please contact our sales office
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(*) Suggested Resale Price (USD) per defined quantity for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors