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LM2706 Datasheet(Fiches technique) 2 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Numéro de pièce LM2706
Description  Miniature, Variable, Step-Down DC-DC Converter with Bypass for RF Power Amplifiers
Télécharger  15 Pages
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Fabricant  NSC [National Semiconductor (TI)]
Site Internet  http://www.national.com
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 2 page
background image
Connection Diagrams
10-Bump micro SMD Package
10-Bump micro SMD Package
20040902
Top View
20040903
Bottom View
Ordering Information
Order Number
Package Type
NSC Package
Marking (*)
Supplied As
LM2706TL
10-Bump Wafer
Level Chip Scale
(micro SMD)
XYTT IS64B
250 Tape and Reel
LM2706TLX
3000 Tape and Reel
(*) XY - denotes the date code marking (2 digit) in production
TT - refers to die run/lot traceability for production
I - pin one indication
S - Product line designator
Note the Package Marking may change over the course of production without notice
Pin Description
Pin
Number
Pin Name
Function
A1
V
DD
Analog Supply Input. If board layout is not optimum, an optional 0.1 µF ceramic capacitor is
suggested (Figure 1).
B1
V
CON
Voltage Control Analog Input. V
CON controls VOUT in PWM mode. Set:
V
CON
≤ 0.55V for V
OUT = 1.5V
0.65V < V
CON < 1.5V for VOUT = 1.75 VCON + 0.45V
V
CON
≥ 1.7V for V
OUT = 3.25V
C1
ABD
Automatic Bypass Disable. Use this digital input to control Automatic Bypass mode. Set:
ABD = low to enable automatic bypass mode
ABD = high to disable automatic bypass mode
D1
BYP
Bypass. Use this digital input to command operation in Forced Bypass mode. Set BYP = 0V
for normal operation.
D2
EN
Enable Input. Set this digital input high for normal operation. For shutdown, set low.
D3
PGND
Power Ground
C3
SW
Switching Node connection to the internal PFET switch and NFET synchronous rectifier.
B3
PV
IN
Power Supply Voltage Input to the internal PFET switch. Connect to the input filter capacitor
(Figure 1).
A3
FB
Feedback Analog Input. Connect to the output at the output filter capacitor (Figure 1).
A2
SGND
Analog and Control Ground
www.national.com
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