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TPS23750
TPS23770
SLVS590A – JULY 2005 – REVISED AUGUST 2005
DC/DC CONTROLLER SECTION (continued)
RTN = V
SS
for this section only.
PARAMETER
Translator output resistance
SEN sinking current
SENP sinking current
TEST CONDITIONS
V
SENP-SEN
= 1.5 V, TMR = RSN, I
FB
= 0
µA
and 10
µA,
R
FB
=
∆V
FB
/
∆
I
FB
V
SENP-SEN
= 1.50 V, V
TMR
= RSN
V
SENP-SEN
= 1.50 V, V
TMR
= RSN
17
22.5
MIN
11.25
TYP
15
MAX
18.75
1
28
UNIT
kΩ
µA
µA
PoE SECTION
PARAMETER
DETECTION (DET)
Offset current
Sleep current
DET leakage current
Detection current
CLASSIFICATION (CLASS)
RTN = V
DD
, Measure I
VDD
+ I
RTN
+ I
DET
+ I
SENP
R
CLASS
= 4420
Ω,
13
≤
V
DD
≤
21 V
I
CLASS
Classification current
R
CLASS
= 953
Ω,
13
≤
V
DD
≤
21 V
R
CLASS
= 549
Ω,
13
≤
V
DD
≤
21 V
R
CLASS
= 357
Ω,
13
≤
V
DD
≤
21 V
R
CLASS
= 255
Ω,
13
≤
V
DD
≤
21 V
V
CL_ON
V
CL_H
V
CU_OFF
V
CU_H
Classification lower threshold
Regulator turns on, V
DD
rising
Hysteresis
Regulator turns off, V
DD
rising
Hysteresis
2.2
10.3
17.7
27.1
38.0
10.2
1
21
0.5
2.5
10.6
18.3
28.0
39.4
11.3
1.75
21.9
0.83
2.8
11.3
19.5
29.5
41.2
13.0
3
23
1
V
mA
DET open, V
DD
= V
RTN
= 1.9 V, Measure I
VDD
+ I
RTN
+ I
SENP
DET open, V
DD
= V
RTN
= 10.1 V, Measure I
VDD
+ I
RTN
+ I
SENP
V
DET
= V
DD
= 57 V, Measure I
DET
RTN = V
DD
, Measure I
VDD
+ I
RTN
+
I
DET
+ I
SENP
V
DD
= 1.4 V
V
DD
= 10.1 V
51.5
395
0.45
5.6
0.3
55
411
4
12
5
58.7
417
µA
µA
µA
µA
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Classification upper threshold
V
PASS DEVICE (RTN)
On resistance
Current limit
I
INR
CONTROL
Inrush current state termination
UVLO
V
UVLO_R
V
UVLO_F
V
UVLO_R
V
UVLO_F
Legacy UVLO threshold
Standard UVLO threshold
V
DD
rising, monitor I
RTN
V
DD
falling, monitor I
RTN
Hysteresis
V
DD
rising, monitor I
RTN
V
DD
falling, monitor I
RTN
Hysteresis
38.4
29.6
8.3
34.1
29.7
4.3
39.3
30.5
8.8
35.1
30.5
4.5
40.4
31.5
9.1
36.0
31.4
4.8
V
V
I
RTN
falling from I
INR
, I
RTN
/I
INR
0.85
1.00
Inrush limit
I
RTN
= 300 mA
V
RTN
= 1 V
V
RTN
= 1.6 V
405
100
0.60
450
140
1
515
180
Ω
mA
mA
5
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