DataSheet39.com

What is L5970D?

This electronic component, produced by the manufacturer "STMicroelectronics", performs the same function as "UP TO 1A STEP DOWN SWITCHING REGULATOR".


L5970D Datasheet PDF - STMicroelectronics

Part Number L5970D
Description UP TO 1A STEP DOWN SWITCHING REGULATOR
Manufacturers STMicroelectronics 
Logo STMicroelectronics Logo 


There is a preview and L5970D download ( pdf file ) link at the bottom of this page.





Total 10 Pages



Preview 1 page

No Preview Available ! L5970D datasheet, circuit

L5970D
UP TO 1A STEP DOWN SWITCHING REGULATOR
s UP TO 1A OUTPUT CURRENT
s OPERATING INPUT VOLTAGE FROM 4.4V
TO 36V
s 3.3V / (±2%) / REFERENCE VOLTAGE
s OUTPUT VOLTAGE ADJUSTABLE FROM
1.2V TO 35V
s LOW DROPOUT OPERATION: 100% DUTY
CYCLE
s 250KHz INTERNALLY FIXED FREQUENCY
s VOLTAGE FEEDFORWARD
s ZERO LOAD CURRENT OPERATION
s INTERNAL CURRENT LIMITING
s INHIBIT FOR ZERO CURRENT
CONSUMPTION
s SINCHRONIZATION
s PROTECTION AGAINST FEEDBACK
DISCONNECTION
s THERMAL SHUTDOWN
APPLICATIONS:
s CONSUMER: STB, DVD, TV, VCR,CAR
RADIO, LCD MONITORS
s NETWORKING: XDSL, MODEMS,DC-DC
MODULES
s COMPUTER: PRINTERS, AUDIO/GRAPHIC
CARDS, OPTICAL STORAGE, HARD DISK
DRIVE
s INDUSTRIAL: CHARGERS, CAR BATTERY
DC-DC CONVERTERS
TEST APPLICATION CIRCUIT
SO8
ORDERING NUMBERS: L5970D (SO8)
L5970D013TR (T&R)
DESCRIPTION
The L5970D is a step down monolithic power
switching regulator capable to deliver up to 1A at
output voltages from 1.2V to 35V.
The device uses an internal P-Channel D-MOS
transistor (with a typical Rdson of 250m) as
switching element to minimize the size of the ex-
ternal components.
An internal oscillator fixes the switching frequency
at 250KHz.
Having a minimum input voltage of 4.4V only, it is
particularly suitable for 5V bus, available in all
computer related applications.
Pulse by pulse current limit with the internal fre-
quency modulation offers an effective constant
current short circuit protection.
VREF
3.3V
VIN = 4.4V to 35V
VCC
SYNC.
6
8
2
L5970D
1
C1
10µF
35V
CERAMIC
COMP
C4
22nF
43
INH.
C3
220pF
R3
4.7K
5
7
GND
OUT L1 33µH
VOUT=3.3V
D1
STPS2L40U R1
FB
5.6K
C2
100µF
10V
R2
3.3K
D98IN954C
May 2003
1/10

line_dark_gray
L5970D equivalent
L5970D
Figure 7. Quiescent Current vs. Junction
Temperature
Iq (mA)
2
Figure 9. Switching Frequency vs.Junction
Temperature
Fsw (KHz)
260
1.8 250
1.6
Vcc = 12V
DC = 0%
1.4
1.2
-50
0 50 100 150
Tj (°C)
Figure 8. Shutdown Current vs.Junction
Temperature
Ishd (µA)
70
240
230
220
-50
Vcc = 12V
Vo = 3.3V
0 50 100
Tj (C)
150
60
Vcc = 12V
50
40
30
-50
0 50 100 150
Tj (°C)
5/10


line_dark_gray

Preview 5 Page


Part Details

On this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for L5970D electronic component.


Information Total 10 Pages
Link URL [ Copy URL to Clipboard ]
Download [ L5970D.PDF Datasheet ]

Share Link :

Electronic Components Distributor


An electronic components distributor is a company that sources, stocks, and sells electronic components to manufacturers, engineers, and hobbyists.


SparkFun Electronics Allied Electronics DigiKey Electronics Arrow Electronics
Mouser Electronics Adafruit Newark Chip One Stop


Featured Datasheets

Part NumberDescriptionMFRS
L5970The function is UP TO 1A STEP DOWN SWITCHING REGULATOR. STMicroelectronicsSTMicroelectronics
L5970ADThe function is 1.5A SWITCH STEP DOWN SWITCHING REGULATOR. STMicroelectronicsSTMicroelectronics
L5970DThe function is UP TO 1A STEP DOWN SWITCHING REGULATOR. STMicroelectronicsSTMicroelectronics

Semiconductors commonly used in industry:

1N4148   |   BAW56   |   1N5400   |   NE555   |  

LM324   |   BC327   |   IRF840  |   2N3904   |  



Quick jump to:

L597     1N4     2N2     2SA     2SC     74H     BC     HCF     IRF     KA    

LA     LM     MC     NE     ST     STK     TDA     TL     UA    



Privacy Policy   |    Contact Us     |    New    |    Search