HDP01-0512N Datasheet, PDF (3/6 Pages) STMicroelectronics – HARD DISK DRIVE POWER SUPPLY PROTECTION

Fig. 1: Non repetitive surge peak on-state current
versus pulse duration (rectangular waveform).
HDP01-0512N
Fig. 2: Peak pulse power dissipation versus
exponential pulse duration (Tj initial = 25°C).
ITSM(A)
50
10
Pl5 vs GND
1
1
10
Tj initial=25°C
Ppp(W)
500
100
tp(ms)
100
10
1000
Pl12 vs GND
1
0.01
0.1
Tj initial=25°C
tp(ms)
1
10
100 300
Fig. 3: Typical clamping voltage versus peak pulse
current (rectangular waveform, tp=2.5µs).
Ipp(A)
3
2
1
0.5
PL12 vs GND
Vcl(V)
0.1
15
16
17
18
19
20
21
22
Fig. 4: Thermal resistance junction to ambient
versus copper surface under tab (Epoxy printed
circuit board FR4, copper thickness: 35µm).
Rth(j-a) (°C/W)
130
120
110
100
90
80
70
60
50
40
30
20
10
S(Cu) (cm²)
0
0
1
2
3
4
5
Note: Rth(j-a) = (TjMax - Tamb) / PMax
Fig. 5: Thermal impedance junction to ambient
and junction to tab versus pulse duration.
Zth(°C/W)
2E+2
1E+2
1E+1
Zth(j-a)
Zth(j-t)
1E+0
1E-1
1E-2
1E-4
1E-3
tp(s)
1E-2
1E-1
1E+0
1E+1
1E+2
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