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PDF MAX77301 Data sheet ( Hoja de datos )
| Número de pieza | MAX77301 | |
| Descripción | Li+ Charger | |
| Fabricantes | Maxim Integrated | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de MAX77301 (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
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EVALUATION KIT AVAILABLE
MAX77301
JEITA-Compliant, Li+ Charger with Smart Power
Selector, Automatic Detection, and USB Enumeration
General Description
Benefits and Features
The MAX77301 is a JEITA-compliant* lithium-ion linear
battery charger that operates from a USB port, a dedi-
cated charger, or universal adapter. The IC provides
automatic adapter-type detection and enumeration with
a USB host or hub. The IC integrates independent bat-
tery charge switch, current sense circuit, MOSFET pass
elements, thermal regulation circuitry, and eliminates the
external reverse-blocking Schottky diode to create the
simplest and smallest USB-compliant charging solution.
The IC includes automated detection of charge adapter
type, making it possible to distinguish USB 2.0 device,
USB charger, dedicated charger devices as well as
standard input adapters. See Table 2. When enumeration
is enabled, the IC automatically negotiates with a USB
host, making it possible to achieve the highest-charging
current available from a USB 2.0 device or USB charger
without processor intervention. The adapter type detec-
tion is compliant with USB 2.0 as well as battery charging
Specification Revision 1.1.
The IC controls the charging sequence for single-cell
Li+ batteries from battery detection, prequalification,
fast charge, top-off, and charge termination. Charging is
controlled using constant current, constant voltage and
constant die-temperature (CCCVCTj) regulation for safe
operation under all conditions. The IC is also compliant
with JEITA battery charging requirements.
S Enables Charging from a USB Port
S Automatic Detection of Adapter Type
S Input Current Up to 1500mA and Charging Current
Up to 900mA
S Enumeration Without Processor Intervention
S Supports USB Low-Speed and Full-Speed
S Compliant with USB 2.0 Specification and Battery
Charging Specification (Revision 1.1)
S Compliant with Next Generation Low-Voltage
Li-Ion Battery Profiles
S Input Overvoltage Protection Up to 16V
S Smart Power Selector™ Allows Power Path
Operation with Discharged or No Battery
S Battery Detection Including Packs with Open
Protectors
S Thermal Regulation Prevents Overheating
S LED Indicator for Charge Done, Precharge, and
Time/Temperature Error
S Serial (400kHz) I2C-Compatible Interface
S 6µA (typ) Shutdown Current
S 2.44mm x 2.44mm, 25-Bump WLP Package
Applications
Bluetooth Headsets, PDAs, and MP3 Players
Other Portable Devices
The Smart Power Selector feature makes the best use
of limited USB or adapter power. Battery charge current
is set independent of the input current limit. Power not
used by the system charges the battery. The battery
assists the input source when needed. System voltage
is maintained by allowing the application to operate with-
out a battery, a discharged battery, or a dead battery.
Automatic input selection switches the system from bat-
tery to external power.
The I2C interface provides full programmability of battery
charge characteristics, input current limit, and protec-
tion features. This provides flexibility for use with a wide
range of adapter and battery sizes.
Simplified Operating Circuit
4.0V TO 6.6V
(+16V OVP)
VBUS
BUS
I2C CONTROL
LOGIC
D+
D-
USB
INTERFACE
OSC
SYS
CHARGE AND
SYS LOAD
SWITCH
BATT
MAX77301
SYSTEM
LOAD
1-CELL LI-ION
Other features include undervoltage lockout (UVLO),
overvoltage protection (OVP), charge status flag, charge
fault flag, input power-OK monitor, battery detection,
JEITA-compliant charging, charge timer, 3.3V/10mA aux-
iliary output, and an external power-on switch.
Ordering Information appears at end of data sheet.
Smart Power Selector is a trademark of Maxim Integrated
Products, Inc.
*U.S. Patent # 6,507,172.
For related parts and recommended products to use with this part, refer to www.maximintegrated.com/MAX77301.related.
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.
19-6556; Rev 0; 1/13
1 page  
MAX77301
JEITA-Compliant, Li+ Charger with Smart Power
Selector, Automatic Detection, and USB Enumeration
LIST OF TABLES
Table 1. Status Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Table 2. Adapter Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Table 3. Device Descriptor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Table 4. VBUS Valid Input Range (Rising) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Table 5. UOK States . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Table 6. CHG_TYPE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Table 7. IBUS_DEF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Table 8. CHG_STAT Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Table 9. I2C Register Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Table 10. CHIP_ID (Register 0x00) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Table 11. CHIP_REV (Register 0x01) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Table 12. STATUS_A (Register 0x02) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Table 13. STATUS_B (Register 0x03) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Table 14. STATUS_C (Register 0x04) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Table 15. EVENT_A (Register 0x05) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Table 16. EVENT_B (Register 0x06) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Table 17. IRQ_MASK_A (Register 0x07) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Table 18. IRQ_MASK_B (Register 0x08) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Table 19. USB_CNTL (Register 0x09) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Table 20. BAT_CNTL (Register 0x10) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Table 21. IBUS_CNTL (Register 0x0A) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Table 22. CHARGER_CNTL_A (Register 0x0B) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Table 23. CHARGER_CNTL_B (Register 0x0C) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Table 24. CHARGER_TMR (Register 0x0D) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Table 25. CHARGER_VSET (Register 0x0E) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Table 26. CHARGER_JEITA (Register 0x0F) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Table 27. PRODUCT_ID_A (Register 0x11) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Table 28. PRODUCT_ID_B (Register 0x12) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Table 29. VENDOR_ID_A (Register 0x13) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Table 30. VENDOR_ID_B (Register 0x14) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Maxim Integrated
5
5 Page 
MAX77301
JEITA-Compliant, Li+ Charger with Smart Power
Selector, Automatic Detection, and USB Enumeration
ELECTRICAL CHARACTERISTICS (continued)
(THM = AGND, CEN = INT_3V3, VBAT = 4.2V, VBUS_, EXT_PWRON, UOK, IRQ, CHG_TYPE, and CHG_STAT are unconnected, TA =
-40NC to +85NC, unless otherwise noted. Typical values are at TA = +25NC.) (Note 2)
PARAMETER
D- Weak Current Sink
D+ Source Voltage
D+ Detection Threshold
D- Logic-High Threshold
D+ Logic-High Threshold
D+/D- Detection Threshold
SYMBOL
IDM_CD_PD
VDP_SRC
VDAT_REF
VDM_IH
VDP_IH
DP_25%
DM_25%
DM_34%
DP_47%
DM_47%
CONDITIONS
IDP_SRC = 200FA
Detection threshold for custom
chargers as % of VBUS
MIN
0.5
0.25
0.8
0.8
23.75
32.3
44.65
TYP
0.6
0.32
25.0
34
47.00
MAX
0.1
0.7
0.40
2.0
2.0
26.25
35.7
49.4
UNITS
FA
V
V
V
V
%
DP_60%
DM_60%
57 60 63
D- Pulldown Resistor
D- Pullup Resistor
D+ Pullup Resistor
D+ Charger Detection
Pullup Resistor
RDM_DWN
RDM_PU
RDP_PU
RDP_CD_PU
External resistor = 33I, low speed only
External resistor = 33I, full speed only
RDP_CD_PU connected to INT_3V3
14.25
1.425
1.425
200
1.500
1.500
330
24.8
1.575
1.575
600
kI
kI
kI
kI
Data Contact Detection
Debounce Timer
D+ Source On Time
D+ Source to High-Current
Time
tDCD_DBNC
tDP_SRC_ON
tDP_SRC_HC
30
100
40
ms
ms
ms
Enumeration Time Limit
tENUM
Time from start of enumeration process
until enumeration
10
s
Reenumeration Timer
tRE_ENUM
Time from suspend mode until it re-
enumerates, RWU_EN = 1
100 ms
Reconnect Timer
tFAULT
Time from failed enumeration to adapter
type detection reenabled, nENU_EN = 0
3
s
Detecting Time
D+/D- open power source nENU_EN = 1
100
ms
Enumeration Fail to
Reconnect Timer
tENU_FAULT
Time from enumeration fail at 500mA
until enumeration is retried at 100mA or
time from enumeration fail at 100mA until
reconnect timer is started
87
ms
XIN, XOUT PINS
Oscillator Frequency
Accuracy
XIN, XOUT Input
Capacitance
Internal oscillator (low speed),
TA = +25°C
With external crystal (full speed)
5.91
6.00
3
6.09
MHz
pF
Maxim Integrated
11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet MAX77301.PDF ] | |
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