Document
LDP01-xxAY
Automotive TVS for load dump protection
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Features
• Stand-off voltage range: from 22 to 70 V • Low leakage current: 1 μA at 25 °C • Operating Tj max: 175 °C • High power capability at Tj max • JEDEC registered package outline • ROHS and Halogen free • Resin meets UL 94, V0 • AEC-Q101 compliant
Complies with the following standards:
• IEC 61000-4-2 exceeds level 4 - 30 kV (air discharge) - 30 kV (contact discharge)
• ISO10605 – C = 330 pF, R = 330 Ω - 30 kV (air discharge) - 30 kV (contact discharge)
• ISO 7637-2 - Pulse 1: VS = -150 V - Pulse 2a: VS = +112 V - Pulse 3a: Vs = -220 V - Pulse 3b: Vs = +150 V - Formerly pulses 5a and 5b
• ISO 16750-2 - Tests A and B
Datasheet - production data
Description
The LDP01-xxAY Transil™ series have been designed to protect automotive sensitive circuits against surges defined in ISO 7637-2 and ISO 16750 tests A and B also called load-dump.
The planar technology makes it compatible with high-end circuits where low leakage current and high junction temperature are required to provide reliability and stability over time.
LDP01-xxAY is packaged in D²PAK.
Table 1. Device summary
Part number
Breakdown voltage (VBR at IR = 1 mA)
min.
typ. max.
V
LDP01-26AY LDP01-28AY LDP01-30AY LDP01-33AY LDP01-35AY LDP01-39AY LDP01-42AY LDP01-47AY LDP01-50AY LDP01-56AY LDP01-68AY LDP01-82AY
24.4 26 27.0
26.7 28 29.5
28.9 30 31.9
31.1 33 34.3
33.3 35 36.9
36.7 39 40.5
40 42 44.2
44.4 47
49
47.8 50 52.8
53.3 56 58.9
64.4 68 71.2
77.8 82
86
October 2015
This is information on a product in full production.
DocID026556 Rev 2
1/11
www.st.com
Characteristics
1 Characteristics
LDP01-xxAY
Symbol
Table 2. Absolute maximum ratings (Tamb = 25 °C)
Parameter
Value
VPP Peak pulse voltage
ISO 10605 (C = 330 pF, R = 330 Ω )
– contact discharge – air discharge IEC 61000-4-2 – contact discharge – air discharge
30 30
30 30
Tstg Storage temperature range Tj Operating junction temperature range TL Maximum lead temperature for soldering during 10 s
-65 to + 175 -55 to + 175
260
Unit
kV
°C °C °C
Symbol Rth(j-c) Junction to case
Table 3. Thermal parameter Parameter D2PAK
Maximum 0.24
Unit °C/W
Figure 1. Electrical characteristics (definitions)
Symbol
VBR VCL IRM VRM IPP
VF Rd aT
= = = = =
= = =
Parameter
Breakdown voltage Clamping voltage Leakage current at VRM Stand-off voltage Peak pulse current
Forward voltage drop Dynamic impedance Voltage temperature
I IF
VCLVBR VRM
VF IRM
Slope: 1/Rd
IPP
V
Figure 2. Pulse definition for electrical characteristics
% I PP 100
50
Pulse waveform tr = rise (µs) tp = pulse duration time (µs)
0 tr tp
t
2/11 DocID026556 Rev 2
LDP01-xxAY
Characteristics
Table 4. Electrical characteristics (parameter)
IRM max. at VRM
VBR at IR(1)
Order code 25 °C 175 °C
min. typ. max.
VCL at IPP 10/1000 µs
max.
RD(2) 10/1000
µs
VCL at IPP 8/20 µs
max.
RD(2) 8/20 µs
⍺ T(3)
max.
µA V
V mA V A m Ω V A m Ω 10-4/°C
LDP01-26AY 1 100 22 24.4 26 27.0 1 36 140 64
42 1400 11
9.6
LDP01-28AY 1 100 24 26.7 28 29.5 1 40 120 88
45 1250 12
9.7
LDP01-30AY LDP01-33AY LDP01-35AY
1 1 1
100 27 28.9 30 31.9 1 40 125 100 28 31.1 33 34.3 1 43.5 110 100 30 33.3 35 36.9 1 45.5 95
65 75 91
49 1400 56 1250 60 1150
12 17 20
9.7 9.8 9.9
LDP01-39AY LDP01-42AY
1 1
100 33 36.7 39 40.5 1 51.5 85 100 36 40 42 44.2 1 57 77
129 166
66 1050 71 1000
24 27
10 10
LDP01-47AY LDP01-50AY
1 1
100 40 44.4 47 49 1 63 65 215 76.5 950 29 100 43 47.8 50 52.8 1 68 55 276 81 900 31
10.1 10.2
LDP01-56AY LDP01-68AY
1 1
100 48 53.3 56 58.9 1 76 48 356 90 770 40 100 58 64.4 68 71.2 1 92 42 495 110 620 63
10.3 10.4
LDP01-82AY 1 100 70 77.8 82 86 1 113 35 771 135 550 89
10.5
1. Pulse test: tP < 50 ms
2. To calculate maximum clamping voltage at other surge level, use the following formula: VCLmax = RD x IPP + VBRmax
3. To calculate VBR or VCL versus junction temperature, use the following formulas:
VBR at Tj = VBR at 25 °C x (1 + ⍺ T x (Tj - 25)) VCL at Tj = VCL at 25 °C x (1 + ⍺ T x (Tj - 25))
Figure 3. Peak pulse power dissipation versus Figure 4. Peak pulse power versus exponential
initial junction temperature (LDP01-30AY)
pulse duration (LDP01-30AY)
6 P PP (kW) 5 4
10/1000 µs
1000
PPP (kW)
100
TJ inTitiJalin=itia2l5= °2C5 C LDPL0D1P-3001A-3Y0AY
3 10
2
1 T j(°C )
0 0 25 50 75 100 125 150 175 200
1 0.1
0.01
0.1
1
tp (ms)
10 100
DocID026556 Rev 2
3/11
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Characteristics
LDP01-xxAY
Figure 5. ISO7637-2, pulse 5a definition
td
Us
13.5 V
10% Battery voltage
t
Serial resistance (Ω)
Figure 6. Load dump capability (LDP01-30AY Us = f(Ri) pulse 5a)
13.5+30 13.5+35 13.5+40 13.5+45 13.5+50 13.5+55 13.5+60 13.5+65 13.5+70 13.5+75 0.5
13.5 V + Us (V) 0.6
0.7
0.8
0.9
1
1.1 1.2 1.3
td
=
400
ms
td
=
300
td ms
=
150
ms
1.4
1.5
Figure 7. ISO7637-2, pulse 5b definition
td Us
Us*
13.5 V 0
10% Battery .