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PDF MAX8600A Data sheet ( Hoja de datos )
| Número de pieza | MAX8600A | |
| Descripción | Single-Input 1-Cell Li+ Charger | |
| Fabricantes | Maxim Integrated Products | |
| Logotipo |  |
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19-3205; Rev 1; 1/09
EVAALVUAAILTAIOBNLEKIT
Single-Input 1-Cell Li+ Charger with
OVP Protection and Programmable Charge Timer
General Description
The MAX8600A single-input linear battery charger safe-
ly charges single-cell Li+ batteries. Charging is opti-
mized for Li+ cells using a control algorithm that
includes low-battery precharging, voltage and current-
limited fast-charging, and top-off charging, while con-
tinuously monitoring the battery for overvoltage,
over/under temperature, and charging time. Charger
timeout protection is programmable, and the status is
indicated by three open-drain outputs.
The MAX8600A linear charger optimizes charging time
by adjusting the charge rate to accommodate the ther-
mal characteristics of a given application. There is no
need to reduce the maximum charge current to accom-
modate worst-case charger power dissipation.
The MAX8600A is a variation of the MAX8600 with
improved dropout and other spec changes. See
Maxim’s website for an outline of MAX8600/MAX8600A
differences.
The MAX8600A is available in a 3mm x 3mm power-
enhanced TDFN package.
Cell Phones
Digital Cameras
PDAs
GPS
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Applications
Portable Media Players
MP3 Players
Wireless Appliances
Pin Configuration
TOP VIEW
+
BAT 1
SETI 2
THM 3
GND 4
CT 5
N.C. 6
BAT 7
MAX8600A
14 FLT
13 DC
12 DC
11 CHG
10 POK
9 DC
8 EN
Features
♦ Low Dropout -0.188V at 0.75A
♦ Up to 1A Programmable Fast-Charge
♦ 5% Charge-Current Accuracy
♦ Logic-Low Enable Input
♦ 14V Input Overvoltage Protection
♦ Programmable On-Chip Charge Timer
♦ Battery Thermistor Input
♦ Three Charger-Status Outputs
♦ Thermally Optimized Charge Rate
♦ 14-Pin, 3mm x 3mm TDFN Package
Ordering Information
PART
TEMP RANGE PIN-PACKAGE TOP
MARK
MAX8600AETD+ -40°C to +85°C
14 TDFN-EP*
(3mm x 3mm)
(T1433-2)
AEF
*EP = Exposed pad.
+Denotes a lead(Pb)-free/RoHS-compliant package.
Typical Operating Circuit
DC INPUT
4.1V TO 5.9V
OFF
ON
DC POK
MAX8600A
EN
CHG
CT
FLT
BAT
SETI
THM
GND
SAFE DC
LOGIC
SUPPLY
LED
+
Li+
TDFN
________________________________________________________________ Maxim Integrated Products 1
For information on other Maxim products, visit Maxim’s website at www.maxim-ic.com.
1 page  
Single-Input 1-Cell Li+ Charger with
OVP Protection and Programmable Charge Timer
Typical Operating Characteristics (continued)
(VDC = 5V, RSETI = 2kΩ, VBAT = 3.6V, MAX8601 Evaluation Kit with thermal resistance of 50°C/W. TA = +25°C, unless otherwise noted.)
CHARGE CURRENT vs. AMBIENT
TEMPERATURE (1A CHARGE)
1100
1000 VBAT = 4V
900
800
700 VBAT = 3.6V
600
500
400
300
200 RSETI = 1.5kΩ
100
-40 -15 10 35 60 85
TA (°C)
FAST-CHARGE TIME vs. CCT
800
700
600
500
400
300
200
100
0
0.010
0.045
0.080
CCT (μF)
0.115
0.150
Pin Description
PIN NAME
1, 7 BAT
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2 SETI
3 THM
4 GND
5 CT
6 N.C.
8 EN
10 POK
FUNCTION
Battery Connection. The IC delivers charging current and monitors battery voltage using BAT. Bypass
BAT to GND with a 2.2µF or larger ceramic capacitor. Connect both BAT inputs together externally. BAT
is high impedance when the IC is disabled. Ensure that all BAT pins are connected together.
DC Charge-Current Programming Pin. Connect a resistor from SETI to GND to set the maximum charging
current (IBAT = 1500V/RSETI), the prequal current, and the CHG done threshold. Monitor charging current
by measuring this pin voltage. SETI is high-impedance when EN is high, or DC is at GND.
Thermistor Input. Connect a 10kΩ NTC thermistor, in close proximity to the battery, from THM to ground
to monitor the battery temperature. The IC suspends charging when RTHM is outside the hot and cold
limits. Disable thermistor functionality by connecting THM to GND. THM is high impedance when EN is
high or DC is at GND.
Ground
Timing Capacitor Input. Connect a capacitor from CT to GND to set the precharge timeout, top-off time,
and fast-charge timeout. Connect CT to GND to disable the timers. CT is high impedance when EN is
high or DC is at GND.
No Connection. Make no external circuit connection.
Active-Low Enable Input. Drive low or connect EN to GND to enable the charger. Drive EN high to disable
the charger. EN has an internal 470kΩ pulldown resistance to GND.
Power-OK Monitor. POK is an open-drain output that pulls low when a valid charging source is detected.
POK is high impedance when DC voltage is outside valid range. POK remains active monitoring DC with
the charger enabled or disabled.
_______________________________________________________________________________________ 5
5 Page 
Single-Input 1-Cell Li+ Charger with
OVP Protection and Programmable Charge Timer
Package Information (continued)
For the latest package outline information and land patterns, go to www.maxim-ic.com/packages.
COMMON DIMENSIONS
SYMBOL MIN. MAX.
A 0.70 0.80
D 2.90 3.10
E 2.90 3.10
A1 0.00 0.05
L 0.20 0.40
k 0.25 MIN.
A2 0.20 REF.
PACKAGE VARIATIONS
PKG. CODE N
D2
T633-2
6 1.50±0.10
T833-2
8 1.50±0.10
T833-3
8 1.50±0.10
T1033-1
10 1.50±0.10
T1033-2
T1433-1
10 1.50±0.10
14 1.70±0.10
T1433-2
14 1.70±0.10
E2
2.30±0.10
2.30±0.10
2.30±0.10
2.30±0.10
2.30±0.10
2.30±0.10
2.30±0.10
e
0.95 BSC
0.65 BSC
0.65 BSC
0.50 BSC
0.50 BSC
0.40 BSC
0.40 BSC
JEDEC SPEC
MO229 / WEEA
MO229 / WEEC
MO229 / WEEC
MO229 / WEED-3
MO229 / WEED-3
----
----
b [(N/2)-1] x e
0.40±0.05 1.90 REF
0.30±0.05 1.95 REF
0.30±0.05 1.95 REF
0.25±0.05 2.00 REF
0.25±0.05 2.00 REF
0.20±0.05 2.40 REF
0.20±0.05 2.40 REF
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______________________________________________________________________________________ 11
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet MAX8600A.PDF ] | |
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