Linear Technology Chronicle 1
www.linear.com.cn
Chinese Edition (Simplified)
Linear Technology ChronicleVol. 12 No. 2
LTC LT PowerPath ThinSOT
•
•
•
• USB
•
•
…
ICHARGE
LTC4008
ACP/SHDN
FAULT
FLAG
NTC
LTC4054BAT
PROG
2 Linear Technology Chronicle
www.linear.com.cn
LTC4054 ThinSOT
. . .
1.
•
•
2. PROG
•
•
•
0.6%
VCC
1.65k
4.2VLi-IonBATTERY
LTC4054-4.2
1µF
VIN4.5V TO 5.25V
BAT
43
5
2
PROG
GND
600mA
Pass TargetedCharge Input Element Ambient Battery
Part Charger Current Voltage Microcontroller Internal/ Charge Temperature Capacities,Number Type (A) (V) Needed? External Termination Monitor? Package mAh*
LTC1734L Linear 0.05 to 0.18 4.55 to 8 Yes Ext µC Required — SOT-23-6 Up to 450
LTC4056 Linear 0.2 to 0.7 4.5 to 6.5 No Ext Timer — SOT-23-8 Up to 1,700
LTC1734 Linear 0.2 to 0.7 4.55 to 8 Yes Ext µC Required — SOT-23-6 Up to 1,700
LTC4054 Linear to 0.8 4.25 to 6.5 No Int C/10 — SOT-23-5 Up to 2,000
LTC4050 Linear to 1 4.5 to 12 No Ext Timer Yes MSOP-10 Up to 2,500
LTC1730 Pulse to 1 4.5 to 12 No Ext Timer Yes SSOP-16 Up to 2,500
LTC1731 Linear to 1 4.5 to 12 No Ext Timer — MSOP-8 Up to 2,500
LTC1732 Linear to 1 4.5 to 12 No Ext Timer — MSOP-10 Up to 2,500
LTC4053 Linear 1.25 (Wall Cube), 4.25 to 6.5 No Int Timer Yes MSOP-10 Up to 3,0000.1 to 0.5 (USB)
LTC1733 Linear 0.5 to 1.5 4.5 to 6.5 No Int Timer Yes MSOP-10 Up to 3,750
LT1571-5 Switcher to 1.5 6.2 to 28 Yes Int C/5 Flag, — SSOP-16 Up to 3,750(500kHz) µC Required
LTC4052 Pulse to 2 4.5 to 12 No Int Timer — MSOP-8 Up to 5,000* 0.4C 1C
LTC4054 LTC4054
ThinSOTTM
• 800mA
•
• C/10
•
• PROG
Linear Technology Chronicle 3
www.linear.com.cn
2A
DCIN
CHG
ACP/SHDN
IMON
NTC
RT
ITH
GND
CHG
ACP
INFET
CLP
CLN
TGATE
BGATE
PGND
CSP
BAT
LTC4006
0.12µF
THERMISTOR10kNTC
309kTIMING
RESISTOR(~2 HOURS)
0.0047µF0.47µF
32.4kCHARGING
CURRENT MONITOR
100k
VLOGIC
DCIN0V TO 20V
2.5A
6.04k
0.1µF
INPUT SWITCH
15nF
20µFTO LOAD
22µH 2A
5k
RSENSE0.05Ω
0.04Ω
20µF
BATTERY
LTC4006
95%
•
•
• 4A
•
• 3.9V
Pass TargetedCharge Input Element Battery
Part Charger Current Voltage Number of Microcontroller Internal/ Charge Capacities,Number Type (A) (V) Cells Needed? External Termination Package mAh*
LTC1731 Linear to 1 4.5 to 12 1 to 2 No Ext Timer MSOP-8 Up to 2,500
LTC1732 Linear to 1 4.5 to 12 1 to 2 No Ext Timer MSOP-10 Up to 2,500
LT®1510-5 Switcher to 1 6.2 to 29 1 to 4 Yes Int µC Required SO-8, SO-16, Up to 2,500(500kHz) SSOP-16
LT1571 Switcher to 1.5 6.2 to 28 1 to 4 Yes Int µC Required SSOP-28 Up to 3,000(200kHz)
LT1511 Switcher to 3 6 to 28 1 to 4 Yes Int µC Required SO-24 Up to 7,500(200kHz)
LTC4006 Sync to 4 6 to 28 2 to 4 No Ext Timer SSOP-16 Up to 10,000SwitcherController
LTC4007 Sync to 4 6 to 28 3 to 4 No Ext Timer, Temp SSOP-24 Up to 10,000SwitcherController
LTC4008 Sync to 4 6 to 28 2 to 6 Yes Ext µC Required SSOP-20 Up to 10,000SwitcherController
* 0.4C 1C
4 Linear Technology Chronicle
www.linear.com.cn
NiMH NiCd
N i M H
NiCd
LTC4008
NiCd NiMH
BATMON
VFB
ICL
ACP/SHDN
FAULT
FLAG
NTC
RT
ITH
GND
ICL
ACP
FAULT
FLAG
DCIN
INFET
CLP
CLN
TGATE
BGATE
PGND
CSP
BAT
PROG
LTC4008
THERMISTOR10kNTC
VLOGIC
INPUT0V TO 20V
STATUS SIGNALS FORMICROPROCESSOR
INPUT SWITCHPROVIDES HIGHER EFFICIENCY
THAN A DIODE
20µF
10µH 0.025Ω
0.02Ω
20µF
SYSTEMLOAD
NiMHBATTERYPACK
PATENTEDCHARGINGCURRENTMONITOR
CURRENT LIMIT ENSURESWALL ADAPTER IS NOTOVERLOADED
CHARGE TERMINATION TIMER SET WITH A LOW COST RESISTOR
SETS UPPER ANDLOWER TEMPERATURE
LIMITS FOR SAFE CHARGING
4A NiMH
• 4A
•
• SSOP-20
•
NiCd NiMHPass Targeted
Charge Input Element BatteryPart Charger Current Voltage Number of Internal/ Charge Capacities,Number Type (A) (V) Cells External Termination Package mAh*
LTC1734 Linear 0.2 to 0.7 4.55 to 8 4 Ext µC Required SOT-23-6 Up to 1,700
LTC1734L Linear 0.05 to 0.18 4.55 to 8 4 Ext µC Required SOT-23-6 Up to 450
LTC1731 Linear to 1 4.5 to 12 6 Ext µC Required MSOP-8 Up to 2,500
LTC1732 Linear to 1 4.5 to 12 6 Ext µC Required MSOP-10 Up to 2,500
LT1510-5 Switcher to 1 6.2 to 29 18 Int µC Required SO-8, SO-16, Up to 2,500500kHz SSOP-16
LTC4008 Sync to 4 6 to 28 16 Ext µC Required SSOP-20 Up to 10,000SwitcherController
* 0.4C 1C
Linear Technology Chronicle 5
www.linear.com.cn
NiMH NiCd
NiCd NiMH
V 1.2 1.2 3.6
V 1.55 1.55 4.1 4.2
V 1 1 2.7
$
10% 10% 6%
mAh
mWh/gm
NiMH
• • •• • •• • •
• • •• • •• • ≤ 1A • ≤ 1A
6 Linear Technology Chronicle
www.linear.com.cn
USB 100mA
500mA
LTC4053 USB USB
•
• 100mA 500mA USB
• 1.25AUSB
• 10 MSOP
•
•
LTC4053 USB
LTC4410 USB
USB
USB
• USB
•
• LTC4053LTC1733
•
• 6 ThinSOT
LTC4410 USB
1k 3k
Li-IonBATTERY
5V WALLADAPTER
1A ICHG
3k
LTC4053
BAT
VCC
ICHG
PROG +
SYSTEMLOAD
USBPOWER
500mA ICHG
USB
4.7µF
4.7µF
0.1µF
1Ω 3.4k1% 1M
VOUT
GND
NTC
TIMER1-CELLLi-Ion
LTC4410
LTC4053
VIN
VCC
BAT
GND
SHDN
USBPCHP
MODE
OFF ON
SYSTEM POWERSUPPLY
USBMODE500mA100mA
SUSPEND
LTC4410MODE
101
LTC4053SHDN
110
4.35V TO 5.5VFROM
USB
100mA 500mA
IRLML6401
PROG
LTC4410 USB LTC4053
Linear Technology Chronicle 7
www.linear.com.cn
LTC4412 PowerPathTM
LTC4412
• 0.02V
0.7V
• 6 ThinSOT
•
• 11µA
LTC1998 IC
1%
1% 2.5µA
6 ThinSOT
• 2.5V 3.25V
•
• 1% 1%
•
LTC1998
LTC4412
POWER SAVINGS!
LTC4412 “IDEAL DIODE”
Vf = 0.02V
CURR
ENT TYPICAL DIODE
Vf = 0.3V TO 0.7V
VOLTAGE
VIN SENSE
WALLADAPTER
INPUT
BATTERYCELL(S) LTC4412
1N5819
FDN306P
COUT
TO LOAD
GND GATE
CTL STAT
LTC1998
R11%
R21%
R31%
HYST
VTRIP
BATTVLOGIC
BATTLO
REGULATOR
µP
Li-Io
n
GND
0.1µF+
THRESHOLDADJUST
HYST
VTRIP
BATT
VLOGIC
BATTLO
1.1R
R
1.2V
LTC1998
LTC4412 PowerPath
LTC4412
8 Linear Technology Chronicle
www.linear.com.cn© 2003 Linear Technology Corporation/0303DP/Printed in USA
LT1787
2.5V
60µA
• 2.5V 60V 60µA
•
• MSOP-8
• – 40°C 125°C
• ± 40µV12
•
LT1787
C0.1µF
RSENSE
VOUT
TOLOAD
1
2
3
4
8
7
6
5
LT1787HVFIL+FIL–
VBIAS
VOUT
VS– VS
+
DNC
VEE
ROUT
LT1787
+852 2428-0303+852 2348-0885
+86 (21) 6375-9478+86 (21) 6375-9479
+86 (10) 6801-1080+86 (10) 6305-4030
+852 2375-8866+86 (10) 8268-4280+86 (21) 6440-1373+86 (755) 8386-7431+86 (25) 481-0877+86 (28) 8652-7116+86 (29) 837-8918+86 (27) 8736-0546
+852 2410-2778+86 (10) 8519-1866+86 (21) 6317-8226+86 (755) 8366-4329+86 (28) 8652-8252+86 (27) 8732-2646+86 (29) 822-9180+86 (592) 516-4701+86 (532) 582-1322