Www.zetex.com Zetex Products For Mobile Phones February 2007.
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Transcript of Www.zetex.com Zetex Products For Mobile Phones February 2007.
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2
Applications within Mobile Phones
Display Backlighting
LED/OLED/LCD Driver and
Schottky Diode
Battery Management
Current Monitor, Transistor and Schottky Diode
Tuning Interface
Varactor Diodes
RF Power Amplifier
MOSFETs and Schottky Diode
Power Management
Low Drop Out Regulators
GPS Antenna Detection
Current Monitor
Camera Flash
Strobe ChargerMOSFET
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Cost Effective Unidirectional Gas Gauge
A common mobile phone battery gas gauge uses VBATT and TBATT
– VBATT changes due to many factors• QBATT, TBATT, IDSCH, IDSCH profile IDSCH > I(C)
Sensing IDSCH improves accuracy ZXCT1012 Micro-power Current
Monitor Provides Simple Solution– IDSCH is measured & can be used:
• Calculate charge remaining• To protect battery• To change capacity profile
– QBATT can be measured• From assumption of charging level
System performance and userinterface greatly improved
ZXCT1012 key features– 3.5µA IQ
– Thin small footprint packages • TSOT23-5 or TDFN3x3-5
Handsetbattery
2.7 to 4.2V
ZXCT1012
RSENSE
VOUT
+
-
Mobile phone handset
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Typical Mobile Phone Charging Circuit
Circuit demand on transistor
Using Zetex PNP can eliminate need for a series connected Schottky diode for reverse blocking
SOT23F, SOT23-6 or MLP packaging to meet Pd at low battery condition
Low Saturation voltage to enable lower input voltage
MainBattery
PowerManagementIC
External Supply
MainCircuit
“Smallest, high dissipation switches”
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Transistor Package Comparison
Package 3L-DFN 8L-DFN SOT23FF
(flat)
SOT23-6
Pin Out
Dimensions
L x W x H
millimetres
2 x 2 x 1 3 x 2x 1 3 x 1.7 x 1 3 x 3.2 x 1.3
Power
Dissipation
Watts
(25x25mm, 1oz)
1.5 1.5 1.3 1.3
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SOT23F (flat) package --------- New Package Introduction
Fits on same pcb footprint as SOT23– 3mm x 2.5mm
Low profile package– Max height 1mm
High power dissipation– 1.3W (25 x 25mm, 2 oz copper)– 1.5W (50 x 50mm, 2 oz copper)– 2W (50 x 50mm, 2 oz copper, t ≤
5secs)3mm
2.5mm
1mm
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PNP Transistors and Schottky for Battery Charging Circuit
Part VCEO VECO IC ICM hFE VCE(sat) PD Package
Number min Max @ IC max @ IC @ IB
V V A A A mV A mA W
ZXT13P20DE6 -20 - -3.5 -10300300
-900
-0.01-1
-65-130
-0.1-1
-10-10
1.1 SOT23-6
ZXT10P20DE6 -20 - -2.5 -6300150
-0.1-2
-30-220
-0.1-1
-10-20
1.1 SOT23-6
ZXTP25020CFF -20 -7 -4.5 -10200150
500-
0.01-1
-110-185
-1-2
-20-40
1.1SOT23
flat
ZXT2M322 -20 - -3.5 -6300150
--
-0.1-2
-220-250
-1-1.5
-20-50
1.53L-DFN2 x 2mm
ZXTD2M832 * -20 - -3.5 -6300150
--
-0.1-2
-220-250
-1-1.5
-20-50 1.5
8L-DFN3 x 2 mm
FMMT718 -20 - -1.5 -6300150
--
-0.1-2
-220-250
-1-1.5
-20-50
0.625 SOT23
* Dual device for phones with adaptor plus USB charging
Part VR IF IFSM VF IR Capacitance trr PD Package
Number max @ IF max @ VR Typ @ VR Typ
V A A mV mA µA V pF V ns W
ZLLS1OOO 40 1.16 22 560460
1.00.5
20 30 26 30 4 0.625 SOT23
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150mA LDOs in SC70-5 and SOT23-5
The ZXCL range of low dropout regulators are inherently stable with tantalum and ceramic capacitor values 1µF. Low output noise (50µVRMS) and good PSRR (56dB) is achieved without the need for additional bypass capacitors.1.5V and 1.8V variants can be made available.
Family ZXCL MIC5213 MAX8511Output Voltage 2.5, 2.6, 2.8, 3.0, 3.3,
4.02.5, 2.6, 2.7, 2.8, 3.0,
3.3, 3.6, 5.01.5, 1.8, 2.5, 2.7, 2.8,
2.85, 3.0, 3.3, 4.5Tolerance at 100mA ±2% ±3% ±1%Input Voltage - Max 5.5 16 6Dropout Voltage – Typ 85mV @ 50mA 250mV @ 50mA 80mV @ 80mADropout Voltage - Max 280mV @ 100mA 600mv @ 80mA 170mV @ 80mAIQ - Max 50µA 180µA typ 90µA
Output Current - Max 150mA 80mA 120mAIQ Shut Down - Max 1µA 10µA 1µA
Line Regulation - Max 0.1% 0.3% No MaxLoad Reg - Max 1- 100m 0.04% 0.5% No MaxPackage SC70-5, SOT23-5 SC70-5 SC70-5
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MOSFETs and Schottky for within the RF Power Amplifier
Part VDS ID IDM RDS(on) QG Ciss PD Package
Number max @ VGS @ ID @ 4.5V @ 10V
V A A mΩ V A nC pF W
N-Channel MOSFET for Level Shifting
ZXMN2B01F 20 2.1 11.8100200
4.51.8
2.41.7
4.8 370 0.625 SOT23
ZXMN2A01F 20 2.1 11.8120225
4.52.5
4.01.5
4.8 370 0.625 SOT23
P-Channel MOSFET for PA Switch
ZXMP2B19FF -20 -3.5 -1855
170-4.5-1.8
-2.5-1.0
6.6 486 1.0 SOT23 Flat
ZXMP2B19FH -20 -3.5 -1855
170-4.5-1.8
-2.5-1.0
6.6 486 1.0 SOT23
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Part VR IF IFSM VF IR Capacitance PD Package
Number max @ IF max @ VR Typ @ VR
V A A mV mA µA V pF V W
ZLLS1OOO 40 1.16 22 560460
1.00.5
20 30 26 30 0.625 SOT23
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Key features:
Programmable LED current <5µA shutdown current High efficiency: 94% Low 100mV feedback voltage for high efficiency Series, parallel and series parallel connection combinations Complementary external switches and Schottky diodes
Key Existing Products:
ZXLD11xx / 19xx series
Designed specifically to drive white LEDs for a wide range of existing and emerging applications, Zetex LED driver solutions provide high efficiency, cost effectiveness and versatility.
Zetex LED driver ICs
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15
Boost converters for LCD / OLED bias
These boost converters provide an adjustable bias voltage of up to 28V for LCD and OLED displays.
Key features:
Adjustable output voltage up to 28V
Wide input voltage range: 1.6V to 5.5V (ZXLB16xx series)
<1µA typical shutdown current (ZXLD16xx series)
85% efficiency (ZXLB1600) / 80% (ZXLD16xx series)
PWM & analog control input (ZXLD16xx series)
True shutdown with output isolated from supply (ZXLB16xx series)
Key products:
ZXLB16xx series (MSOP-10 Package)
ZXLD16xx series (TSOT23-5 and SC70-6 Package)
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Boost converters for LCD / OLED bias
Typical Application Circuit; ZXLB1600 ZXLD1601/1615
Typical Application Circuit; ZXLD1601
Typical Application Circuit; ZXLD1615
Product Part Number Description EV Order Number
ZXLB1600X10 ZXLB1600 LCD & OLED Bias #ZXLB1600EV1
ZXLD1100H6 ZXLD1100 LED driver board #ZXLD1100EV1
ZXLD1100H6 Mobile LED Flash Unit #ZXLD1100EV2
ZXLD1615ET5 ZXLD1615 LCD & OLED Bias #ZXLD1615EV1
ZXLD1937ET5 ZXLD1937 LED driver boards #ZXLD1937EV1
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Photoflash charger ICs
Key applications: Digital camera flash unit Film camera flash unit Rescue / safety flash strobe
Key features:
Dedicated photoflash charger ICs
Charges 80µF to 300V in 3.5 sec from 3V supply
Operates from 1.8V to 8V supply
>75% flyback efficiency
Idle current: only 4.5µA when cap is charged
Total solution: control IC, bipolar transistor or MOSFET and Schottky diode
Small MSOP8 package
Key products:
ZXSC44x series
The ZXSC44x series have a flyback efficiency of 75%, much higher than commonly used discrete charging circuits.