SI-3011S Datasheet, PDF (1/3 Pages) Sanken electric – Dropper Type Regulator with Reset Function

Dropper Type Regulator with Reset Function SI-3011S
Features
q 5-terminal IC regulator with reset function; 0.7A output current
q Voltage accuracy of ± 2%
q Low Dropout voltage 0.5V at IO 0.3A
q Built-in constant current type overcurrent, overvoltage and thermal protection circuits
q TO-220 equivalent full-mold miniature package
External Dimensions (unit: mm)
3.2 ^{± 0.2}
10.0^{± 0.2}
4.2^±0.2
2.8^±0.2
Absolute Maximum Ratings
Parameter
Symbol
DC input voltage
VIN
Output current
IO
PD1
Power Dissipation
PD2
Junction temperature
Tj
Operating temperature
Storage temperature
TOP
Tstg
Junction to case thermal resistance j-c
Junction to ambient-air thermal
j-a
resistance
Ratings
35
0.7 *¹
22
1.8
–40 to +150
–40 to +105
–40 to +150
5.5
66.7
Unit
V
A
W
W
ºC
ºC
ºC
ºC/W
(Ta = 25ºC)
Conditions
With infinite heatsink
Stand-alone without heatsink
ºC/W Stand-alone without heatsink
a
2.6^±0.1
b
0.95^{± 0.15}
0.85 ^+---00..21
P1.7 ^±0.7• 4 = 6.8^±0.7
+0.2
0.45^---0.1
3.9^±0.7 (4.3)
8.2^±0.7
12345
Terminal connections
1. VIN
2. VRST
3. GND
4. DLY
5. VOUT
a: Type No.
b: Lot No.
(Forming No. 1101)
Electrical Characteristics _{(Tj=25ºC, VIN=14V, IO=0.3A unless otherwise specified)}
Parameter
Ratings
Symbol
Unit
min
typ
max
Conditions
Input voltage
VIN
6 *²
30 *¹
V
Output voltage
VO
4.90
5.00
5.10
V
Dropout voltage
VDIF
0.5
V
Ripple rejection
RREJ
54
dB
f =100 to 120Hz
Quiescent circuit current
Iq
8.5
12
mA
IO = 0A
Overcurrent protection starting
IS
0.71 *³
A
current
DLY
Threshold voltage
VDLYth
2.7
2.9
3.1
V
DLY terminal open
terminal _{Source current}
I DLY
25
35
45
µA
Reset threshold voltage level VothL ^*4 VO •0.90 VO •0.92 VO •0.94
V
VO =5.0V (typ)
Reset threshold voltage hysteresis Voth
50
100
150
mV
VOth =VOthH^*5– VOthL
H-level output voltage
VRSTH
VO – 0.1
V
VO =5.0V (typ), RL =510Ω
*^{6 L-level output voltage}
VRSTL
VRST
terminal ^{Source current when}
I RSTH
1.3
H-level
0.5
V
VO =5.0V (typ), RL =510Ω
mA
VO =5.0V (typ),
shorted across VRST and GND
Equivalent Circuit Diagram
VIN
1
OCP
DET
ERR
RESET
REF1 REF2
GND ¹
Standard Circuit Diagram
VOUT
5
VRST
2
DLY
4
Sink current when L-level I RSTL
–10
mA
VRST = 0.5V
Notes:
*1. Since PD(max) = (VIN – VO) • IO = 22 (W), VIN (max) and IO(max) may be limited depending on operating
conditions. Refer to the Ta—PD curve to compute the corresponding values.
*2. Refer to the dropout voltage.
*3. IS rating shall be the point at which the output voltage VO (VIN = 14V, Io = 0.3A) drops to –5%.
*4. VOthL is the Vo threshold voltage at which the VRST terminal turns from high to low.
*5. VOthH is the Vo threshold voltage at which the VRST terminal turns from low to high. VothH may be
given by VOthL plus VOth.
*6. Reset signal output terminal VRST is pulled up in the IC [pull-up resistance 3 kΩ (typ)], allowing direct
connection with a logic circuit.
Reset Signal Output Timing Chart
VIN
VO + VDIF
Input voltage
GND
VOthH
Output voltage
GND
Voltage across VDLYth
delay capacitor
VO
VOth
VOthL
VDLY
*² _D1
Power *¹
supply
C+1
1
5
VIN _SI-3011S VOUT
3
2
4 _VRST
GND
DLY
RL
Reset signal ^CO+
output terminal
*² _D2
CDLY
Co :
Output capacitor (47 to 100µF, 50V)
*1 C1 : Anti-oscillation capacitors (C1: approx. 47µF).
This must be connected to terminals 1 (VIN) and 3 (GND)
via the shortest possible routing. An approximately
0.33µF capacitor with good high frequency
characteristics must be connected in parallel in case of
inductive input lines or long-distance wiring. Tantalum
capacitors are recommended for C1 and C0, especially
at low temperatures.
*² D1,D2 : Protection diode.
Required as protection against reverse biasing between
input and output.
(Recommended diode: Sanken EU2Z.)
0 (V)
Reset signal output
0 (V)
VRSTH
tDLY
VRSTL
tDLY
[Calculating tDLY]
Reset signal delay time tDLY is calculated from the following formula:
t DLY
=
VDLYth + 0.2
I DLY
• CDLY
* IDLY is the current flowing from DLY terminal
shown in the Standard Circuit Diagram.
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