MAX1870AETJ+ Maxim Integrated Products, MAX1870AETJ+ Datasheet - Page 4

• Manufacturer Part Number: MAX1870AETJ+
• Description: Battery Management Li+ Step Up/Step Down Battery Charger
• Manufacturer: Maxim Integrated Products

Specifications of MAX1870AETJ+

• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Step-Up/Step-Down
Li+ Battery Charger
ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 2, V
0.75 x V
values are at T
4
REFERENCE
REF Output Voltage
REF Load Regulation
REF Undervoltage-Lockout Trip
Point
REFIN Input Range
REFIN UVLO Rising
REFIN UVLO Hysteresis
REFIN Input Bias Current
SWITCHING REGULATOR
C ycl e- b y- C ycl e S tep - U p M axi m um
C ur r ent- Li m i t S ense V ol tag e
C ycl e- b y- C ycl e S tep - D ow n
M axi m um C ur r ent- Li m i t S ense
V ol tag e
Step-Down On-Time
Minimum Step-Down Off-Time
Step-Up Off-Time
Minimum Step-Up On-Time
MOSFET DRIVERS
VHP - VHN Output Voltage
VHN Load Regulation
DHI On-Resistance High
DHI On-Resistance Low
VHP Input Bias Current
BLKP Input Bias Current
DLOV Supply Current
DBST On-Resistance High
DBST On-Resistance Low
ERROR AMPLIFIERS
GMV Amplifier Loop
Transconductance
GMI Amplifier Loop
Transconductance
_______________________________________________________________________________________
REFIN
PARAMETER
, VCTL = LDO, CELLS = FLOAT, GND = PGND = 0, V
A
= +25°C.)
DCIN
= V
CSSP
= V
I
0 < I
V
V
DCIN = 0, V
V
V
V
V
V
V
8V < V
0 < I
I
I
DCIN = 0
V
ICTL = 0
V
DBST low
I
I
V C TL = RE FIN , V
ICTL = REFIN, V
REF
SOURCE
SINK
SOURCE
SINK
REF
DCIN
DCIN
DCIN
DCIN
DCIN
DCIN
DCIN
DCIN
ICTL
CSSN
= 0µA
REF
VHN
falling
= 10mA
= 10mA
= V
= 18V
= 12V, V
= 19V, V
= 18V, V
= 18V, V
= 12V, V
= 12V, V
= 18V
VHP
= V
< 500µA
< 10mA
= 10mA
= 10mA
REFIN
< 28V, no load
REFIN
CSSS
BATT
BATT
BATT
BATT
BATT
BATT
= 3.3V
BAT T
CSIP
= V
= 3.6V
= 16.8V
= 16.8V
= 16.8V
= 16.8V
= 16.8V
= 16.8V
= 16.8V
- V
VHP
CONDITIONS
CSIN
= 18V, V
= 72mV
DLOV
BATT
= 5.4V, T
= V
CSIP
A
= V
= 0°C to +85°C, unless otherwise noted. Typical
CSIN
= V
4.076
BLKP
0.15
0.15
MIN
135
135
0.05
2.5
2.2
1.6
4.5
1.8
-1
= 12V, V
4.096
TYP
150
150
100
3.1
1.9
2.4
0.4
1.8
0.3
0.1
1.3
0.1
0.1
2.4
50
50
70
5
5
2
1
5
2
1
REFIN
4.116
MAX
0.50
0.40
0.20
100
165
165
150
400
3.9
3.6
2.2
+1
2.6
2.0
5.5
3.0
10
10
= 3.0V, V
5
3
1
2
2
5
3
UNITS
µA/mV
µA/mV
mV
mV
mV
mV
mV
mA
µA
µA
µA
µA
µs
µs
µs
µs
ICTL
Ω
Ω
Ω
Ω
V
V
V
V
V
=