LM3203TLX National Semiconductor Corporation, LM3203TLX Datasheet - Page 2

• Manufacturer Part Number: LM3203TLX
• Description: Step-down Dc-dc Converter With Bypass Mode For Cdma / Wcdma Rf Power Amplifiers
• Manufacturer: National Semiconductor Corporation

www.national.com
Connection Diagrams
Order Information
Pin Description
Pin #
C1
D1
D2
D3
C3
A1
B1
B3
A3
A2
BYPOUT
PGND
SGND
Name
V
BYP
PV
V
SW
FB
EN
CON
DD
IN
Note: The package marking “XY” designates the date code. “TT” is a NSC internal code for die traceability.
Order Number
LM3203TLX
Top View
LM3203TL
Analog Supply Input. A 0.1 µF ceramic capacitor is recommended to be placed as close to this
pin as possible. (Figure 1)
Voltage Control Analog input. V
voltage under Application information.) Do not leave floating.
Feedback Analog Input. Connect to the external resistor divider. (Figure 1)
Bypass. Use this digital input to command operation in Bypass mode. Set BYP low for PWM
operation.
Enable Input. Set this digital input high after Vin
low.
Power Ground
Switching Node connection to the internal PFET switch and NFET synchronous rectifier.
Connect to an inductor with a saturation current rating that exceeds the maximum Switch Peak
Current Limit specification of the LM3203.
Power Supply Voltage Input to the internal PFET switch and Bypass FET. (Figure 1)
Bypass FET Drain. Connect to the output capacitor. (Figure 1) Connect this pin to V
Bypass mode is NOT required. Do not leave floating.
Analog and Control Ground
10–Bump Thin Micro SMD Package, Large Bump
See NS Package Number TLP10NHA
Package Marking (Note)
20141602
XYTT SFYB
XYTT SFYB
CON
2
controls V
Description
3000 Units, Tape and Reel
250 Units, Tape and Reel
OUT
>
2.7V for normal operation. For shutdown, set
in PWM mode. (Refer Setting the output
Supplied As
Bottom View
20141603
DD
when