LTC1758-1_15 Datasheet, PDF (16/16 Pages) Linear Technology – RF Power Controllers with 250kHz Control Loop Bandwidth and 40dB Dynamic Range

LTC1758-1/LTC1758-2
TYPICAL APPLICATIO S
Single Band Cellular Telephone Transmitter
68Ω
V_IN ^33pF
Li-Ion
SHDN
LTC1758-1
1
V_IN
2
RF
3
SHDN
4
GND
8
V_CC
7
V_PCA
6
TXEN
5
PCTL
TXEN
RF IN
RF PA
DIRECTIONAL
COUPLER
DAC
1758 TA02
Dual Band Cellular Telephone Transmitter Without Current Limiting
68Ω
V_IN
Li-Ion
33pF
SHDN
LTC1758-1
1
V_IN
2
RF
3
SHDN
8
V_CC
7
V_PCA
6
TXEN
4
GND
5
PCTL
TXEN
RF POWER MODULE WITH MUX
V_CC
PWRCTRL
RFOUT1
900MHz
BANDSELECT RFOUT2
1800MHz
RF1 IN RF2 IN
DIRECTIONAL
COUPLER
DIPLEXER
50Ω
1758 TA03
900MHz 1800MHz
DAC
RELATED PARTS
PART NUMBER
LTC1261
LTC1550/LTC1551
LTC1730
LTC1732
LTC1734
LTC1754
LT^®1761
LTC1957
LTC3200/LTC3200-5
DESCRIPTION
Regulated Inductorless Voltage Inverter
Low Noise Inductorless Voltage Inverter
Li-Ion Pulse Charger
Li-Ion Linear Charger
ThinSOT^TM Li-Ion Linear Charger
ThinSOT Charge Pump
ThinSOT LDO
RF Power Controller
Low Noise, Regulated Charge Pump
LTC3404
Step-Down DC/DC Converter
ThinSOT is a trademark of Linear Technology Corporation.
COMMENTS
Regulated –5V from 3V, REG Pin Indicates Regulation, Up to 15mA, Micropower
Regulated Output, <1mV_P-P Ripple, 900kHz
Complete Pulse Charger for 1-Cell Li-Ion Battery
Complete Linear Charger for 1- and 2-Cell Li-Ion Battery
Only Two External Components, Allows Charge Current Monitoring for Termination
2V ≤ V_IN ≤ 4V, I_OUT = 40mA, No Inductors for White LED Backlight
I_OUT = 100mA, Low Noise: 20µV_RMS
Single/Dual Channel RF Power Controller (Higher Bandwidth Version of the LTC1758)
2MHz Constant Frequency, I_OUT = 100mA, 2.7V ≤ V_IN ≤ 4.5V,
ThinSOT and MSOP Packages
1.4MHz Integrated Synchronous Rectification, 10µA Quiescent Current
16 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone] ^q FAX:[phone] ^q www.linear-tech.com
175812f LT/TP 0601 2K • PRINTED IN THE USA
© LINEAR TECHNOLOGY CORPORATION 2001