19-2902; Rev 0; 7/03
SOT23
________________________________
MAX1551/MAX1555
٫֠໗ޥ֬٫ăດ୯ྐၖ༶ԩթပᄮߘࢪ۠ࣁߘ࣊
Li+
৹ޠዷLjԌ৹ޠዷᇀݽؕ7Vوพ൩٫ႅă
౮ණུڪቨ٫ଁࡧષPCғوԦনLjԌᆰၛᅍࡧ֬٫
ଔLjෳದᇀ٫֠ኴዮĂพ൩٫ႅዮݽوഉ࿒ԥ
࢙ؕفུڪቨǗۚص
ڪቨو୭෫Lj֬٫ಹԥ࢙ߔڱLjۚกኒԧဏ֬٫
٫ૣă
MAX1551
٫ᆚă ൌࠨქଁ֬٫٫ᆚᅘပLj
MAX1555
صᅳ
100mA (
৹ᅋᅢ֬٫LjྐၖڭဳăصઘષDC٫ᆚ෫Lj֬٫
٫ૣӇብཛྷ
܀ቛ٫֠٫ă
MAX1551/MAX1555
ᇀ
-40
Ҫࠆქޔ
ᇘઉᅋ
ઘĂدୣᅘDC٫ᆚ෫Lj֬٫٫ૣӇብཛྷ
USB
ዮؙ)ăሦჅLjࣩ٫ࢪསࣩ٫و
280mA (
ņባ
+85
৹ჾ
POK
CHG
٨ျ)ăྐၙෳᅋพ൩ಃӚ۠ࣁߘ
Գᅋ5ᄧĂҭျ
ņུڪ۶ཙă
USB*ࢪAC
MAX1551/MAX1555
พ־Ljᅋᅢቚกܱઘષพ൩
พ־ቚ֬٫ኴຢă
คైಹ٫ᆚཛྷة
࢙ብཛྷّ٫౿ă
POK
USB
SOT23
________________________________
PDA
ྐහӄ
ܤྃ٫ࡨ
ืଵࢲ
概述
ؕفུ
ࣅಹো
ܢኰLjޠዷ
应用
封装Ă
USB/AC
单节
适配器双输入Ă
电池充电器
Li+
________________________________
使用
♦
♦
♦
♦
♦ 5
♦
USB或AC
插入AC适配器时可自动进行切换
片上温度限制电路简化电路板设计
充电状态指示
引脚Ă薄型
受美国专利
适配器进行充电
SOT23
#6,507,172
封装
保护
_____________________________
PART TEMP RANGE PIN-PACKAGE
MAX1551EZK-T -40°C to +85°C 5 Thin SOT23-5
MAX1555EZK-T -40°C to +85°C 5 Thin SOT23-5
_____________________________
PART TOP MARK FEATURES
MAX1551EZK ADRT POK Output
MAX1555EZK ADRU CHG Output
特性
MAX1551/MAX1555
定购信息
选择指南
_____________________________
TOP VIEW
15BATUSB
MAX1551
2
GND
POK
(CHG)
*Protected by U.S. Patent #6,507,172.
ӊྲྀก
ۭᄕؓྥLjၖവ്ൌࠨװᅷوኼവ၂LjഋԸ৬
索取免费样品和最新版的数据资料，请访问
ቁᄪྲྀዊوᄕྲྀLj
Maxim
(MAX1555)
34
THIN SOT23
________________________________________________________________ Maxim Integrated Products 1
DC
ԥڶۭᄕቲ،ᇀوᄖࢪᅑױդූوؓྥݘᇖăഋኢᄌᄕྲྀቲ৹،ᇀྲྀዖዩቑࢪ
Maxim
引脚配置
໗ޥوᄪྲྀҔዊă
Maxim
的主页：
Maxim
_________________________
AC ADAPTER
3.7V TO 7V
USB
3.7V TO 6V
www.maxim-ic.com
DC
USB
MAX1551
(MAX1555)
。
CHARGE
CONTROL
LOGIC
CONTROL
GND
典型工作电路
BAT
Li+
TO LOGIC RAIL
POK
(CHG)
TO SYSTEM
LOAD
SOT23
封装Ă
USB/AC
适配器双输入Ă
单节
电池充电器
Li+
ABSOLUTE MAXIMUM RATINGS
DC to GND......................................................................0 to +8V
DC to BAT .......................................................................0 to +7V
BAT, CHG, POK, USB to GND .................................-0.3V to +7V
Continuous Power Dissipation (T
5-Pin Thin SOT23 (derate 9.1mW/°C above +70°C)....727mW
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
= +70°C)
A
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature Range ............................-40°C to +150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
ELECTRICAL CHARACTERISTICS
(VDC= 5V, V
DC
DC Voltage Range (Note 1) 3.7 7.0 V
DC to BAT Voltage Range 0.1 6.0 V
DC Undervoltage Lockout
MAX1551/MAX1555
Threshold
DC Supply Current 1.75 3 mA
DC to BAT On-Resistance VDC = 3.7V, V
DC to BAT Dropout Voltage
USB
USB Voltage Range (Note 1) 3.7 6.0 V
USB Undervoltage Threshold
USB Supply Current V
USB to BAT On-Resistance V
USB to BAT Dropout Voltage
BAT
BAT Regulation Voltage VDC or V
DC Charging Current V
USB Charging Current V
BAT Prequal Threshold V
Prequalification Charging Current V
BAT Leakage Current VDC = V
POK, CHG, AND THERMAL LIMIT
CHG Threshold
CHG, POK Logic-Low Output I
CHG, POK Leakage Current V
Thermal-Limit Temperature
= 0, I
USB
PARAMETER CONDITIONS MIN TYP MAX UNITS
BAT
= 0, C
= 1μF, TA = 0°C to +85°C, unless otherwise noted.)
BAT
Input rising, 430mV hysteresis, V
= 3.6V 1 2 Ω
BAT
When charging stops, V
DC falling, 200mV hysteresis
Input rising, 430mV hysteresis, V
V
= 3V (Note 1)
BAT
= 5V, VDC = 0 1.65 3 mA
USB
= 3.7V, V
USB
When charging stops, V
USB falling, 200mV hysteresis, V
USB
= 3.3V, V
BAT
= 3.3V, VDC = 0, V
BAT
rising, 100mV hysteresis 2.9 3 3.1 V
BAT
= 2.8V 20 40 80 mA
BAT
USB
Charge current where CHG goes high,
falling, 50mA hysteresis
I
BAT
, I
CHG
POK
, V
CHG
POK
Charge current reduced by 17mA/°C above this
temperature
= 3.6V, VDC = 0 2 4 Ω
BAT
= 5V 4.158 4.2 4.242 V
= 0, VDC = 5V 220 280 340 mA
USB
= 0, V
BAT
= 10mA 150 300 mV
= 6V, TA = +25°C 0.001 1 μA
= 4V,
BAT
= 4V,
BAT
= 5V 80 90 100 mA
USB
= 4.2V 5 μA
= 3V (Note 1) 3.75 3.95 4.15 V
BAT
= 0,
DC
= 0
DC
30 60 90 mV
3.75 3.95 4.15 V
30 60 90 mV
25 50 100 mA
+110 °C
2 _______________________________________________________________________________________
SOT23
封装Ă
USB/AC
适配器双输入Ă
单节
电池充电器
Li+
ELECTRICAL CHARACTERISTICS
(VDC= 5V, V
DC
DC Voltage Range (Note 1) 3.7 7.0 V
DC to BAT Voltage Range 0.1 6.0 V
DC Undervoltage Lockout
Threshold
DC Supply Current 3mA
DC to BAT On-Resistance VDC = 3.7V, V
DC to BAT Dropout Voltage
USB
USB Voltage Range (Note 1) 3.7 6.0 V
USB Undervoltage Lockout
Threshold
USB Supply Current V
USB to BAT On-Resistance V
USB to BAT Dropout Voltage
BAT
BAT Regulation Voltage VDC or V
DC Charging Current V
USB Charging Current V
BAT Prequal Threshold V
Prequalification Charging Current V
BAT Leakage Current VDC = V
POK, CHG
CHG Threshold
CHG, POK Logic-Low Output I
CHG, POK Leakage Current V
Note 1: The input undervoltage lockout has 430mV of hysteresis. The charger turns on when an input rises to 3.95V (typ), and turns
off when it falls below 3.52V.
Note 2: Specifications to -40°C are guaranteed by design, not production tested.
= 0, I
USB
PARAMETER CONDITIONS MIN MAX UNITS
BAT
= 0, C
= 1μF, TA = -40°C to +85°C, unless otherwise noted.) (Note 2)
BAT
Input rising, 430mV hysteresis, V
= 3.6V 2 Ω
BAT
When charging stops, V
hysteresis
Input rising, 430mV hysteresis, VDC = 0, V
(Note 1)
= 5V, VDC = 0 3 mA
USB
= 3.7V, V
USB
When charging stops, V
hysteresis, V
USB
= 3.3V, V
BAT
= 3.3V, VDC = 0, V
BAT
rising, 100mV hysteresis 2.9 3.1 V
BAT
= 2.8V 20 80 mA
BAT
USB
Charge current where CHG goes high,
I
falling, 50mA hysteresis
BAT
, I
CHG
POK
, V
CHG
POK
= 3.6V, VDC = 0 4 Ω
BAT
= 0
DC
= 5V 4.141 4.259 V
= 0, VDC = 5V 220 340 mA
USB
= 0, V
BAT
= 10mA 300 mV
= 6V, TA = +25°C1μA
= 4V, DC falling, 200mV
BAT
= 4V, USB falling, 200mV
BAT
= 5V 80 100 mA
USB
= 4.2V 5 μA
= 3V (Note 1) 3.75 4.15 V
BAT
= 3V
BAT
30 95 mV
3.75 4.15 V
30 95 mV
25 100 mA
MAX1551/MAX1555
_______________________________________________________________________________________ 3
SOT23
USB-TO-DC TRANSITION WAVEFORM
MAX1551/55 toc08
400ms/div
V
USB
5V/div
V
DC
5V/div
0A
0V
0V
0V
BATTERY
CURRENT
200mA/div
V
POK
2V/div
封装Ă
USB/AC
适配器双输入Ă
单节
电池充电器
Li+
____________________________________________________________________
(VDC= 5V, V
300
250
200
150
100
CHARGE CURRENT (mA)
50
0
-50
MAX1551/MAX1555
0 0.50.4
100
80
60
40
20
USB CHARGE CURRENT (mA)
0
-20
0 4.5
USB
= 0, I
BAT
= 0, C
CHARGE CURRENT
vs. DC VOLTAGE HEADROOM
V
= 3.8V, VDC FALLING
BAT
0.30.20.1
DC VOLTAGE HEADROOM (VDC - V
USB CHARGE CURRENT
vs. BATTERY VOLTAGE
BATTERY VOLTAGE (V)
= 1μF, TA = +25°C, unless otherwise noted.)
BAT
CHARGE CURRENT
vs. USB VOLTAGE HEADROOM
100
80
60
40
20
CHARGE CURRENT (mA)
0
-20
VDC = 0, V
0 0.5
USB VOLTAGE HEADROOM (V
BAT
= 3.8V, V
BAT
MAX1551/55 toc01
) (V)
DC CHARGE CURRENT
vs. AMBIENT TEMPERATURE
300
250
MAX1551/55 toc04
200
150
100
50
DC CHARGE CURRENT (mA)
0
4.03.53.02.52.01.51.00.5
-50
THERMAL LIMIT ACTIVATED
V
= 3.8V, VDC = 5V
BAT
25 85
TEMPERATURE (°C)
USB
USB
- V
FALLING
0.40.30.20.1
) (V)
BAT
7565554535
300
250
MAX1551/55 toc02
200
150
100
50
DC CHARGE CURRENT (mA)
0
-50
0 4.5
BATTERY TERMINATION VOLTAGE
4.22
BAT OPEN
MAX1551/55 toc05
4.21
4.20
4.19
BATTERY TERMINATION VOLTAGE (V)
4.18
-40 85
典型工作特性
DC CHARGE CURRENT
vs. BATTERY VOLTAGE
MAX1551/55 toc03
4.03.53.02.52.01.51.00.5
BATTERY VOLTAGE (V)
vs. TEMPERATURE
MAx1551/55 toc06
35 6010-15
TEMPERATURE (°C)
4 _______________________________________________________________________________________
OFF-BATTERY LEAKAGE CURRENT (μA)
OFF-BATTERY LEAKAGE CURRENT
vs. DC INPUT VOLTAGE
2.5
VDC = 0, SWEEPING USB
0 TO 5V OR V
SWEEPING DC 0 TO 5V
2.0
V
BAT
1.5
1.0
0.5
0
05
= 0,
USB
= 4.2V
DC OR USB INPUT VOLTAGE (V)
MAX1551/55 toc07
4321
SOT23
封装Ă
USB/AC
适配器双输入Ă
单节
电池充电器
Li+
___________________________________________________________________
引脚
PIN NAME FUNCTION
1 USB
2 GND Ground
3
4DC
5 BAT Battery Connection. Decouple BAT with a 1μF ceramic capacitor to GND.
_____________________________
MAX1551/MAX1555
٫֠ှ֬٫Ljෳӯဝդ౹وᅋྐၙဝ؞ೝණคై
Li+
名称
POK
CHG
ڭ֬٫ಹ٫ᆚพ൩ă
USB
USB Port Charger Supply Input. USB draws up to 100mA to charge the battery. Decouple USB with a 1μF
໗ޥ༟ᱺă
USB
ceramic capacitor to GND.
ٜ
Power-OK Active-Low Open-Drain Charger Status Indicator. POK pulls low when either charger source is
٫ᆚটၥĂّ٫౿ᅘပĂࣁଁ֬٫ಹኴຢቚăൌࠨქଁ٫ᆚ෫Lj
present (MAX1551 only).
ّ٫౿ᅘပĂࣁଁ֬٫ኴຢቚăص٫֠֬٫෫
Active-Low Open-Drain Charge Status Indicator. CHG pulls low when the battery is charging. CHG goes to a
֠჻֬ୄLjױ෫֬٫ಹᅢ٫ႅனĂ֬٫٫ૣّባ
high-impedance state, indicating the battery is fully charged, when the charger is in voltage mode and
ཛྷݽየຢ(
CHG
charge current falls below 50mA. CHG is high impedance when both input sources are low (MAX1555 only).
DC Charger Supply Input for an AC Adapter. DC draws 280mA to charge the battery. Decouple DC with a
คైಹوDC֬٫ಹ٫ᆚพ൩ăDC٫ᆚ໗ޥ
AC
໗ޥ༟ᱺă
DC
1μF ceramic capacitor to GND.
٫֠ăઘ
MAX1555)
໋ׯ٫൛ባ
1μF
৹໗ޥዮݽ
USB
ă
GNDཛྷBAT
100mA
໗ޥ༟ᱺă
详细说明
৹ෳᅋ
USBࢪAC
คైಹ٫ᆚڶة
ಹăሦဗಹޠዷ෫ྐၖ༶ԩթပᄮߘࢪ۠ࣁߘLjԌ৹
ޠዷᇀݽؕ7Vوพ൩٫ႅă
ԩུڪቨଁࡧષPCғوԦনLjԌᆰၛᅍࡧ֬٫
ଔLjෳದᇀ٫֠ኴዮĂพ൩٫ႅዮݽوഉ࿒ԥ
࢙ؕفུڪቨǗۚص
MAX1551/MAX1555
ؕفུڪ
ቨو୭෫Lj֬٫ಹԥ࢙ߔڱLjۚกኒԧဏ֬٫٫
ૣLj٫ૣ࢙Ѣሙߘာུڪմ߹
+110°C
وԩܖჾ
17mA/°C
وڪّă
صᅳ
100mA (
ઘĂدୣᅘDC٫ᆚ෫Lj֬٫٫ૣӇብཛྷ
USB
ዮؙ)ăሦჅLjࣩ٫ࢪསࣩ٫و
USB
ࣅಹো
৹ᅋᅢ֬٫LjྐၖڭဳăصઘષDC٫ᆚ෫Lj֬٫
٫ૣӇብཛྷ
280mA (
ෳพ൩Ljቝე٫ᆚઘف
٨ျ)ă
USBࠧ/ࢪDC
MAX1551/MAX1555
Lj֬٫ಹট
ୣᅘ
ޠዷă
صพ൩٫ᆚӇჰዟ෫Lj٫֠٫ૣّᅢ
ăྐၙෳᅋ
5μA
พ൩ಃӚ۠ࣁߘ܀ቛ٫֠٫ă߷ၖეᇀݘႅพ൩
ࣁ၂۴وคైಹՏ൩)෫ཛྷ٫ଁ໗ޥүLj৹ᇀ
(
คైಹพ൩)ڭՏ൩ქޔ۠ࣁߘă
(
DC
功能
و٫֠֬٫٫ૣăઘ
ཛྷّ٫౿ă߷
CHG
و٫֠֬٫٫ૣăઘ
280mA
ჾ࿒ăصޔพ൩ᆚোཛྷّ٫౿෫Lj
50mA
MAX1551/MAX1555
໋ׯ٫൛ባ
1μF
ّ(
POK
ӰཛྷݽየຢLjӹட٫
CHG
໋ׯ٫൛ባ
1μF
USB
৹ෳᅋ
USB
ཛྷ
GND
MAX1551)
GND
与适配器电源的切换
พ൩ࢪDCพ൩ှ֬
٫Lj دԌ܇ༀ෫ෳᅋଁ٫ᆚཛྷ٫֠֬٫ă
MAX1555
ዔڑՌᅘပوพ൩Ԍᅋದှ֬٫ă߷
ޔ٫ᆚোᅘပLjᇘᅍ࿘ෳᅋDCพ൩ăӹ1࿈ஐะષ
ࠧ
ࣃพ־ࢪഝڑქޔ
ࣺوࡳă
USB
MAX1551وPOK
ࢪ
V
DC
ݽᅢ
V
USB
MAX1551
电源就绪
ᄧཛྷّ٫౿ᅘပĂࣁଁพ־Ljص
෫ብཛྷّ٫౿ă
3.95V
LEDăPOK
ቚ֬٫ಹกܱઘષพ
POK
൩٫ᆚԌቁᇀှ֬٫ă
MAX1555
MAX1555وCHG
ᄧཛྷّ٫౿ᅘပĂࣁଁ֬٫ኴຢ
ቚพ־ăص٫֠ቁᇀ֬٫(ྐଥก
֬٫٫ૣݽᅢ
50mA෫LjCHG
ᇀ٫ႅனೲ֬٫٫ૣټባ
Ӈባّ٫౿ăص֬٫ಹ
50mA
ݽየኴຢLjӹ٫֠჻֬ୄăص
Ԍԥቛăᇀᆊ֬٫ன࿒Lj
CHG
充电状态
ࡱกDCޥ٫)ೲ
USB
ჾ࿒෫Lj
Ӱݽ෫Lj֬٫߹֔
CHG
ཛྷّ٫౿ă
引脚说明
ă
ཛྷ
MAX1551/
(POK)
৹ჾᅋዷ
(CHG)
ᄧӰཛྷ
CHG
MAX1551/MAX1555
DC
表1Ă
Exceeds operating input range. Not allowed. See the
Absolute Maximum Ratings section.
(VDCtakes precedence when both inputs are present.)
USB和DC
输入选择
VDC > 7V OR V
_______________________________________________________________________________________ 5
USB
> 6V
> 3.95V AND
V
DC
DON’T CARE
V
USB
280mA (typ)
charging from DC
< 3.52V AND
V
DC
3.95V < V
100mA (max)
charging from USB
USB
< 6V
AND V
V
DC
Undervoltage lockout
USB
< 3.52V
SOT23
封装Ă
USB/AC
适配器双输入Ă
单节
MAX1551/MAX1555
٫֠ă߷
ሦቸன࿒Lj֬٫٫ૣӇቨཛྷ
电池充电器
Li+
وᆊ֬٫٫ૣ৹ჾү්ڪ܅٫و
ّᅢ3VLjಹ࢙൩ᆊ֬٫னLjᇀ
V
BAT
40mA
ă
预充电电流
ԩܖჾ
GND
ቆߘာུڪّᅢུڪ୭ă
ـቤ߹െོ໘ă
17mA/°C
ባქޔ࠶ؙوٜ౿எLjᅘኜᅢޢଔဋൾԌү
وڪّă
封装温度限制电路
MAX1551/MAX1555
وԦনLjԌᆰၛᅍࡧ֬٫ଔLj ෳದᇀ٫֠ኴዮĂ
พ൩٫ႅዮݽوഉ࿒ԥ࢙ؕفུڪቨăಹ
߹ّ
֧؍ࠧ٨ျوൾെှᅍࡧහࣜăص
MAX1555
ဏ֬٫٫ૣLj٫ૣ࢙Ѣሙߘာུڪմ߹
وޢࠞ܀ቛ߹െLjᆰၛ٫ଁғሯڶو
BAT
ؕفུڪ୭෫Lj֬٫ಹԌԥߔڱLj ۚกኒ
౮وུڪቨ٫ଁࡧષPCғ
MAX1551/
+110°C
و
ᇀ
DCĂUSBࠧBAT
ၖეѠኰᇀᄮᄧو
٫ቬو٫൛ă
____________________________
TRANSISTOR COUNT: 541
PROCESS: BiCMOS
ᄧᄮෳᅋ໋ׯసଁ٫൛Ljሦဗ٫൛
1cm
_______________________________________________________________
MAX1551/MAX1555
AC ADAPTER
3.7V TO 7V
USB
3.7V TO 6V
1μF
1μF
DC
C1
CHARGE
USB
C2
MAX1551
(MAX1555)
CONTROL
LOGIC
CONTROL
GND
BAT
POK
(CHG)
TO SYSTEM
LOAD
Li+
C3
1μF
TO LOGIC RAIL
R1
100kΩ
INDICATES
THAT POWER
IS PRESENT
(EITHER DC
OR USB)
MAX1551/MAX1555
100mAوUSB
ჾLj༚ෳᅋ
֬٫٫ૣԥ࢙
典型应用电路
و
旁路电容
X5RࢪX7R
芯片信息
6 _______________________________________________________________________________________
SOT23
封装Ă
USB/AC
适配器双输入Ă
单节
___________________________________________________________________
(ӊืযዊ໗ޥوܢኰ༐৹ԥกዮوߢޏLjၖዮوܢኰ༶ျဳྲLjഋՓၻ www.maxim-ic.com/packagesă)
电池充电器
Li+
封装信息
MAX1551/MAX1555
_______________________________________________________________________________________ 7
SOT23
封装Ă
USB/AC
适配器双输入Ă
单节
_______________________________________________________________
(ӊืযዊ໗ޥوܢኰ༐৹ԥกዮوߢޏLjၖዮوܢኰ༶ျဳྲLjഋՓၻ www.maxim-ic.com/packagesă)
电池充电器
Li+
MAX1551/MAX1555
封装信息 (续)
MAXIM
北京
8328
免费电话：
电话：
传真：
MaximԥڶMaxim
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үૠᇀൌࠨ෫ࣺĂୣᅘൌࠨҴو໗࿒၌ݢդ౹ዊࠧߢޏوദઉă
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ก
Maxim Integrated Products, Inc.
وქޔኢՋඨӶă
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