TPS2346
 
SLUS529  MAY 2002
4
www.ti.com
electrical characteristics V
I(VIN1)
  =  5.15  V,  V
I(VIN2)
  =  5  V,  V
I(VIN3)
  =  3.3  V,  V
I(VIN4)
  =  5.2  V,
T
A
 = 40_C to 85_C (unless otherwise noted) (continued)
overcurrent comparators 1, 2, 3
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
V
OC1
Overcurrent threshold voltage
(VIN1  CS1)
34
45
56
V
OC2
Overcurrent threshold voltage
(VIN2  CS2)
29
40
51
mV
V
OC3
Overcurrent threshold voltage
(VIN3  CS3)
29
40
51
t
R
Response time
1
5
overcurrent comparator 4
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
V
OC4
Overcurrent threshold voltage
(VIN4  CS4) relative to VMAX4
50
225
mV
t
R
Response time
1
5
undervoltage (UV)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
V
UV1
Channel 1 undervoltage limit
4.35
4.53
4.71
V
UV2
Channel 2 undervoltage limit
4.22
4.40
4.58
V
UV3
Channel 3 undervoltage limit
2.78
2.90
3.02
V
V
UV4
Channel 4 undervoltage limit
-4.76
-4.58
-4.30
overvoltage (OV)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
V
OV1
Channel 1 overvoltage limit
5.54
5.77
6.00
V
OV2
Channel 2 overvoltage limit
5.38
5.60
5.82
V
OV3
Channel 3 overvoltage limit
3.55
3.70
3.85
V
V
OV4
Channel 4 overvoltage limit
-7.00
-5.82
-5.54
IRAMP output
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
I
CHG
Source current, charging
V
O(IRAMP)
 = 0.5 V
46
58
68
I
DSG
Sink current, discharging
V
O(IRAMP)
 = 0.5 V
1.3
1.8
2.5
undervoltage lockout (UVLO)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
V
UVLOL
VIN1 UVLO, input rising
2.1
2.4
2.9
V
UVLOH
VIN1 UVLO, input falling
V
I VIN2
 = V
I VIN3
 = V
I VIN4
 = 0 V
1.90
2.25
2.70
V
V
HYS
VIN1 UVLO hysteresis
   
   
   
0.05
ENABLE
 input
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
V
IL
Low-level input voltage
0.8
V
IH
High-level input voltage
2
V
I
IH
High-level input leakage current
V
I(ENABLE
)
 = 5 V
50
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