Purchase L4973D3.3, In-stock L4973D3.3 From SeekIC.
MFG:3150 Package Cooled:ST
Part Number: L4973D3.3
MFG: 3150
Package Cooled: ST
Description: The L4973 is a step down monolithic power switching regulator delivering 3.5A at fixed voltages of 3.3...
- Table of contents:
L4973D3.3
-
Suppliers
DataSheet
General Description
L4973D3.3 General Description
The L4973 is a step down monolithic power switching regulator delivering 3.5A at fixed voltages of 3.3V or 5.1V and using a simple external divider output adjustable voltage up to 50V.
Realized in BCD mixed technology, the device uses an internal power D-MOS transistor (with a typical Rdson of 0.15ohm) to obtain very high efficiency and very fast switching times.Switching frequency up to 300KHz are 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 40V cover the majority of the today applications.
Features of this new generation of DC-DC converter includes pulse by pulse current limit, hiccup mode for output short circuit protection, voltage feed forward regulation, soft start, input/output synchronization, protection against feedback loop disconnection, inhibit for zero current consumption and thermal shutdown.
Packages available are in plastic dual in line, DIP-18 (12+3+3) for standard assembly, and SO20 (12+4+4) for SMD assembly.
L4973D3.3 Maximum Ratings
|
Symbol |
Parameter |
Value |
Unit | ||
|
DIP-18 |
S0-20 | ||||
|
V7,V8 |
V9,V8 |
Input voltage |
58 |
V | |
|
V2,V3 |
V2,V3 |
Output DC voltage Output peak voltage at t = 0.1s f=200KHz |
-1 -5 |
V V | |
|
I2,I3 |
I2,I3 |
Maximum output current |
int. limit. |
||
|
V9-V8 |
V10-V8 |
14 |
V | ||
|
V9 |
V10 |
Bootstrap voltage |
70 |
V | |
|
V11 |
V12 |
Analogs input voltage (VCC = 24V) |
12 |
V | |
|
V17 |
V19 |
Analogs input voltage (VCC = 24V) |
13 |
V | |
|
V12 |
V13 |
(VCC = 20V) |
6 -0.3 |
V V | |
|
V18 |
V20 |
(VCC = 20V) |
5.5 -0.3 |
V V | |
|
V10 |
V11 |
Inhibit |
Vcc -0.3 |
V V | |
|
Ptot |
Power dissipation a Tpins 90°C (Tamb = 70°C no copper area) (Tamb = 70°C 4cm copper area on PCB) |
DIP 12+3+3 |
5 1.3 2 |
W W W | |
| Power dissipation a Tpins = 90°C | SO20 |
4 |
W | ||
|
Tj,Tstg |
Junction and storage temperature |
-40to150 |
°C | ||
L4973D3.3 Features
·UPTO3.5ASTEPDOWNCONVERTER
·OPERATING INPUT VOLTAGE FROM 8V TO 55V
·3.3V AND 5.1V (±1%) FIXED OUTPUT, AND ADJUSTABLE OUTPUTS FROM:0V TO 50V (3.3V type) 5.1V TO 50V (5.1 type)
·FREQUENCYADJUSTABLE UP TO300KHz
·VOLTAGEFEED FORWARD
·ZERO LOAD CURRENT OPERATION (min 1mA)
·INTERNAL CURRENT LIMITING (PULSE BY PULSE AND HICCUPMODE)
·PRECISE 5.1V (1.5%) REFERENCE VOLTAGE EXTERNALLY AVAILABLE
·INPUT/OUTPUT SYNCHRONIZATION FUNCTION
·INHIBIT FOR ZERO CURRENT CONSUMPTION (100mA Typ. at VCC = 24V)
·PROTECTION AGAINST FEEDBACK DISCONNECTION
·THERMAL SHUTDOWN
·OUTPUT OVERVOLTAGEPROTECTION
·SOFT START FUNCTION
·OPERATING INPUT VOLTAGE FROM 8V TO 55V
·3.3V AND 5.1V (±1%) FIXED OUTPUT, AND ADJUSTABLE OUTPUTS FROM:0V TO 50V (3.3V type) 5.1V TO 50V (5.1 type)
·FREQUENCYADJUSTABLE UP TO300KHz
·VOLTAGEFEED FORWARD
·ZERO LOAD CURRENT OPERATION (min 1mA)
·INTERNAL CURRENT LIMITING (PULSE BY PULSE AND HICCUPMODE)
·PRECISE 5.1V (1.5%) REFERENCE VOLTAGE EXTERNALLY AVAILABLE
·INPUT/OUTPUT SYNCHRONIZATION FUNCTION
·INHIBIT FOR ZERO CURRENT CONSUMPTION (100mA Typ. at VCC = 24V)
·PROTECTION AGAINST FEEDBACK DISCONNECTION
·THERMAL SHUTDOWN
·OUTPUT OVERVOLTAGEPROTECTION
·SOFT START FUNCTION
L4973D3.3 Connection Diagram
L4973D3.3
PDF/DataSheet Download
- Datasheet: L4973D3.3
- File Size: 228092 KB
- Manufacturer: STMICROELECTRONICS [STMicroelectronics]
- Click here to Download
- ·L4901
- STMICROELECTRONICS [STMicroelectronics]
- DUAL 5V REGULATOR WITH RESET
- 137029 KB
- ·L4901A
- STMICROELECTRONICS [STMicroelectronics]
- DUAL 5V REGULATOR WITH RESET
- 137029 KB
- ·L4902A
- STMICROELECTRONICS [STMicroelectronics]
- DUAL 5V REGULATOR WITH RESET AND DISABLE
- 116003 KB
- ·L4903
- STMICROELECTRONICS [STMicroelectronics]
- DUAL 5V REGULATOR WITH RESET AND DISABLE FUNCTIONS
- 143447 KB
- ·L4904A
- STMICROELECTRONICS [STMicroelectronics]
- DUAL 5V REGULATOR WITH RESET
- 99227 KB
- ·L4909
- STMICROELECTRONICS [STMicroelectronics]
- EXTERNALLY ADJUSTABLE MULTIFUNCTION REGULATOR
- 63013 KB
- ·L4915
- STMICROELECTRONICS [STMicroelectronics]
- ADJUSTABLE VOLTAGE REGULATOR PLUS FILTER
- 101731 KB
- ·L4916
- STMICROELECTRONICS [STMicroelectronics]
- VOLTAGE REGULATOR PLUS FILTER
- 82025 KB
L4973D3.3 Relative Products
%20SERIES.JPG)
L4972AD013TR
IC REG SW 2A 5.1-40V STDN 20SOIC
-
L4972AD
The L4972Aisa stepdownmonolithicpowerswitching regulatordelivering2Aat avoltagevariable from 5.1 to 40V.Realized with BCD mixed technology, L4972Aisa uses a DMOS output transistor to obtain very high efficiencyand very fast switching times. Featuresofthe L49...
(NARROW%20PDIP%20MDIP)%20SERIES.JPG)
L4972A
The L4972Aisa stepdownmonolithicpowerswitching regulatordelivering2Aat avoltagevariable from 5.1 to 40V.Realized with BCD mixed technology, the device uses a DMOS output transistor to obtain very high efficiencyand very fast switching times. Featuresofthe L4...
L4971D013TR
IC REG STEP DOWN 1.5A 16-SOIC
-
L4971D
IC REG SW 1.5A STEPDOWN 16-SOIC
L4971
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 Rdso...
Hotspot Suppliers Product
XC3S400-5PQ208C
Price: 10.85-12.85 USD
Field-Programmable Gate Array, 208PQFP, 400K, –0.5 to 3.75 V, XC3S400-5PQ208C
pm150rra060
Price: 1-2 USD
pm150rra060 MITSUBISHI Electronics
NF-6100-N-A2
Price: 12.3-15.3 USD
NF-6100-N-A2, BGA
UPD43256BCZ-70LL
Price: 0.6-1 USD
256K-BIT, CMOS static RAM, DIP28, Fast access time, high speed, low power
ADV7180BSTZ
Price: 2.55-3.55 USD
10-Bit, 4 x Oversampling SDTV Video Decoder, 64-LQFP, 1.0 V, ADV7180BSTZ
SAP15N
Price: 5-6 USD
Darlington transistor, 150V, with built-in temperature compensation diode, TO3P
LM324N
Price: 0.1-0.5 USD
Quadruple operationl amplifiers, DIP, 3 V to 30 V, high-gain, Low Supply Current Drain
TS80C32X2MCA
Price: 0.1-0.5 USD
80C51, CMOS single chip, 8-bit microcontroller, 40/20MHz, 40-DIP, 4.5 V ~ 5.5 V, ROMless
TAJA106K010RNJ
Price: 0.024-0.035 USD
CAP TANTALUM, 10μF, 10V, 10%, SMD, TAJA106K010RNJ, AVX Corporation
2SK2611
Price: 1-4 USD
TO-3P, TOSHIBA field effect transistor, silicon N channel, MOS type, 720 V, 100 μA
IR21084S
Price: 0.5-2 USD
high voltage, high speed, power MOSFET and IGBT driver, -0.3 to 625V, 50 V/ns
XC2S200-5PQ208C
Price: 9-12.5 USD
Spartan-IIE 2.5V FPGA, QFP, Very low cost, 0.18 micron process, Fully PCI compliant, Zero hold tim...
