MAX8671XETL+ Maxim Integrated Products, MAX8671XETL+ Datasheet - Page 30

• Manufacturer Part Number: MAX8671XETL+
• Description: IC PMIC W/CHARGER 40-TQFN
• Manufacturer: Maxim Integrated Products

Specifications of MAX8671XETL+

• Function: Charge Management
• Battery Type: Lithium-Ion (Li-Ion), Lithium-Polymer (Li-Pol)
• Voltage - Supply: 4.1 V ~ 6.6 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 40-WFQFN Exposed Pad
• Mounting Style: SMD/SMT
• Input Voltage: 2.6 V to 6.6 V
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Output Current: 0.5 A
• Output Voltage: 0.6 V to 5 V
• Supply Current: 0.285 mA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

CST1 and CST2 are open-drain charger status outputs.
Their function is shown in Table 3 and Figure 7. When
the MAX8671X is used with a µP, pull CST1 and CST2
up to the system logic voltage with resistors to indicate
PMIC with Integrated Charger and
Smart Power Selector for Handheld Devices
Figure 7. Charger State Diagram
30
______________________________________________________________________________________
THERMISTOR SUSPEND
THERMISTOR SUSPEND
Charge Status Outputs (CST1, CST2)
I
CHGMAX
THERMISTOR SUSPEND
UOK AND/OR DOK = 1
UOK AND/OR DOK = 1
UOK AND/OR DOK = 1
CST[1:2] = 01
CST[1:2] = 01
I
I
CST[1:2] = 01
CHG
CHG
=
I
CHG
2000
= 0mA
= 0mA
= 0mA
x
R
1.5V
CISET
THM WITHIN RANGE
THM OUT OF RANGE
IC RESUMES TIMER
THM OUT OF RANGE
IC SUSPENDS TIMER
THM WITHIN RANGE
IC RESUMES TIMER
THM WITHIN RANGE
t > 15s
IC SUSPENDS TIMER
THM OUT OF RANGE
I
CHG
IC SETS TIMER = 0
IC SETS TIMER = 0
> I
CHGMAX
V
(V
BAT
BATREG
< 2.82V
x
CHARGER DISABLED
PREQUALIFICATION
UOK AND/OR DOK = 1
UOK AND/OR DOK = 1
UOK AND/OR DOK = 1
7%
UOK AND/OR DOK = 1
UOK AND/OR DOK = 1
NO INPUT POWER
+ V
I
UOK = 0, DOK = 0
CHG
FAST-CHARGE
V
CST [1:2] = 11
BATRCHG
CST[1:2] = 11
CST[1:2] = 00
CST[1:2] = 00
CST[1:2] = 11
CST[1:2] = 11
BAT
I
I
I
CHG
CHG
TOP-OFF
CHG
= I
DONE
= V
CHGMAX
= 0mA
= 0mA
= 0mA
BATREG
) < V
t > 15s
USB AND/OR DC = INVALID
CEN = 0
USUS = 0
IC SETS TIMER = 0
charge status to the µP. Alternatively, CST1 and CST2
sink up to 20mA each for LED charge indicators.
If the charge status output feature is not required, connect
CST1 and CST2 to ground or leave them unconnected.
BAT
/10
I
AND V
IC SETS TIMER = 0
CHG
V
IC SETS TIMER = 0
≤ V
BAT
< I
BATREG
> 3.0V
BAT
CHGMAX
= 4.2V
x
4%
(V
t > t
IC SETS TIMER = 0
BATREG
PREQUAL
t > t
V
USB AND DC = INVALID
IC EXTENDS TIMER BY 2x
BAT
+ V
I
CHG
AND V
FST-CHG
USUS = 1
<
BATRCHG
CEN = 1
< I
OR
I
IC SUSPENDS TIMER
CHG
AND V
CHGMAX
BAT
)
< V
< I
CHGMAX
BAT
BATREG
x
(I
I
CHG
IC RESUMES TIMER
SET
< V
50%
OR V
BATREG
x 20%) < I
< I
x 20%
BAT
CHGMAX
UOK AND/OR DOK = 1
I
CHG
TIMER EXTEND
= V
ANY STATE
TIMER FAULT
TIMER SUSPEND
CST [1:2] = 10
CST [1:2] = 00
I
CHG
BATREG
CST [1:2] = 00
< (I
CHG
x
CHGMAX
53%
= 0mA
< (I
CHGMAX
x 20%)
I
x 50%)
CHG
AND V
IC RESUMES TIMER
< I
CHGMAX
BAT
= V
BATREG
x 23%