MFG:STMicroelectronics Category:Integrated Circuits (ICs) Package Cooled:ZIP D/C:08+/09+
L4970A, L4971, L4971-10 Datasheet download
Category: Integrated Circuits (ICs)
MFG: STMicroelectronics
Package Cooled: ZIP
D/C: 08+/09+
Description: IC REG SW 1.5A STEP DOWN 8-DIP
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PDF/DataSheet Download
Datasheet: L4970A
File Size: 409034 KB
Manufacturer: STMICROELECTRONICS [STMicroelectronics]
Download : Click here to Download
PDF/DataSheet Download
Datasheet: L4971
File Size: 138012 KB
Manufacturer: STMICROELECTRONICS [STMicroelectronics]
Download : Click here to Download
PDF/DataSheet Download
Datasheet: L4901
File Size: 137029 KB
Manufacturer: STMICROELECTRONICS [STMicroelectronics]
Download : Click here to Download
| Technical/Catalog Information | L4970A |
| Vendor | STMicroelectronics |
| Category | Integrated Circuits (ICs) |
| Type | Step-Down (Buck) |
| Number of Outputs | 1 |
| Voltage - Input | 15 ~ 50 V |
| Voltage - Output | 5.1 ~ 40 V |
| Current - Output | 10A |
| Power - Output | 30W |
| Package / Case | Multiwatt-15 (Vertical, Bent and Staggered Leads) |
| Packaging | Tube |
| Internal Switch(s) | Yes |
| Synchronous | Yes |
| Rds (On) | - |
| Operating Temperature | 0°C ~ 125°C |
| Frequency - Switching | 200kHz |
| Lead Free Status | Lead Free |
| RoHS Status | RoHS Compliant |
| Other Names | L4970A L4970A 497 1410 5 ND 49714105ND 497-1410-5 |
The L4970A is a stepdown monolithic power switching regulator delivering 10A at a voltage variable from 5.1 to 40V.
Realized with BCD mixed technology, the device uses a DMOS output transistor to obtain very high efficiency and very fast switching times. Features of the L4970A include reset and power fail for microprocessors, feed forward line regulation, soft start, limiting current and thermal protection. The device is mounted in a 15-lead multiwatt plastic power package and requires few external components. Efficientoperation at switching frequencies up to 500KHz allows reduction in the size and cost of external filter components.
| Symbol | Parameter | Value | Unit |
| V9 | Input voltage | 55 | V |
| V9 | Input to output voltage difference | 50 | V |
| V7 | Negative output DC voltage | -1 -7 |
V |
| I7 | Negative output peak voltage at t = 0.1ms; f = 100KHz | Internally Limited | V |
| V6 | Voltage at pin 3 and 6 | 65 V9 + 15 |
V |
| V3,V12 | Voltage at pin 2 | 12 | V |
| V4 | Pin 3 sink current | 50 | mA |
| I4 | Pin 5 source current | 50 | mA |
| PTOT | Power dissipation at Tcase 90°C | 20 | W |
| Tj, Tstg | Junction and storage temperature | -40 to 150 | °C |
| Technical/Catalog Information | L4971 |
| Vendor | STMicroelectronics |
| Category | Integrated Circuits (ICs) |
| Type | Step-Down (Buck) |
| Number of Outputs | 1 |
| Voltage - Input | 8 ~ 55 V |
| Voltage - Output | 3.3 ~ 50 V |
| Current - Output | 1.5A |
| Power - Output | 1W |
| Package / Case | 8-DIP (300 mil) |
| Packaging | Tube |
| Internal Switch(s) | Yes |
| Synchronous | No |
| Rds (On) | 250 mOhm |
| Operating Temperature | 0°C ~ 125°C |
| Frequency - Switching | 100kHz ~ 300kHz |
| Lead Free Status | Lead Free |
| RoHS Status | RoHS Compliant |
| Other Names | L4971 L4971 497 6697 5 ND 49766975ND 497-6697-5 |
The L4971 is a step down monolithic power switching regulator delivering 1.5A at a voltage between 3.3V and 50V (selected by a simple external divider). Realized in BCD mixed technology, the device uses an internal power D-MOS transistor (with a typical Rdson of 0.25W) to obtain very high efficency and high switching speed.
A switching frequency up to 500KHz is achievable (the maximum power dissipation of the packages must be observed).
A wide input voltage range between 8V to 55V and output voltages regulated from 3.3V to 50V cover the majority of today's applications.
Features of this new generations of DC-DC converter include pulse-by-pulse current limit, hiccup mode for short circuit protection, voltage feedforward regulation, soft-start, protection against feedback loop disconnection, inhibit for zero current consumption and thermal shutdown.
The device is available in plastic dual in line, MINIDIP 8 for standard assembly, and SO16W for SMD assembly.
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