Rainbow Electronics MAX4880 User Manual
Page 2
MAX4880
Overvoltage-Protection Controller with
Internal Disconnect Switch
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(V
IN
= 5V, T
A
= -40
°C to +85°C, unless otherwise noted. Typical values are at T
A
= +25
°C.) (Note 1)
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.
(All voltages referenced to GND.)
IN ............................................................................-0.3V to +30V
GATE ......................................................................-0.3V to +12V
EN, CB, FLAGV, BAT_OK, BTA, BTB, BTB_SNS .....-0.3V to +6V
Continuous Power Dissipation (T
A
= +70°C)
10-Pin TDFN (derate 18.5mW/°C above +70°C) ...1481.5mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature .................................................... +150°C
Storage Temperature Range ............................-65°C to +150°C
Lead Temperature (soldering, 10s) ................................+300°C
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
INPUT VOLTAGE (IN)
Input Voltage Range
V
IN
1.2
28.0
V
Overvoltage Trip Level
OVLO
V
IN
rising
5.5
5.6
5.7
V
O ver vol tag e- Tr i p - Level H yster esi s
50
mV
Undervoltage-Lockout Threshold
UVLO
V
IN
falling
4.2
4.35
4.5
V
Undervoltage-Lockout Hysteresis
50
mV
Supply Current
I
IN
+ I
BTA
No load, V
IN
= 5.4V, V
EN
= 0 or 5.5V,
V
CB
= 0 or V
IN
240
380
µA
INTERNAL SWITCH
BTA Input Range
V
BTA
2.8
5.7
V
BTA Undervoltage Lockout
BTA
UVLO
Falling edge
2.4
2.7
V
BTA-Undervoltage-Lockout
Hysteresis
50
mV
BTB-Switch-Disconnect Trip
Level
BTB
TRIP
4.10
4.20
V
BTB-Switch-Disconnect
Hysteresis
200
mV
Switch-Forward Current Limit
I
FWD
450
525
600
mA
T
A
= +25
°C
600
Switch-Reverse Current Limit
I
REV
650
mA
Voltage Drop (V
BTA
– V
BTB
)
I
L
= 400mA
110
mV
BTB Off Current
I
BTB-OFF
V
EN
= 0 ( V
C B
= 0, or V
IN
< V
U V L O
and V
BTA
= 0)
1
µA
GATE
GATE Voltage
V
GATE
I
GATE
sourcing 1µA , V
IN
= 5V
9
10
V
GATE Pulldown Current
I
PD
V
IN
> V
OVLO
, V
GATE
= 5V
60
mA
TIMING
GATE Startup Delay
t
START
V
IN
> V
UVLO
, V
GATE
> 0.3V (Figure 1)
20
50
80
ms
FLAGV Delay Time
t
DELAY
V
GATE
= 0.3V,V
FLAGV
= 2.4V (Figure 1)
20
50
80
ms
GATE Turn-On Time
t
GON
V
GAT E
= 0.3V to 8V , C
GAT E
= 1500p F ( Fi g ur e 1)
7
ms
GATE Turn-Off Time
t
GOFF
V
IN
increasing from 5V to 8V at 3V/µs,
V
GATE
= 0.3V, C
GATE
= 1500pF (Figure 2)
6
20
µs