BELLING BL317 High current adjustable voltage Datasheet

BL317
HIGH CURRENT ADJUSTABLE VOLTAGE
REGULATOR BL317
DESCRIPTION
The B L3 17 is an ad ju stab le 3 -termina l po sitive
voltage regu la to r, de signed to sup p ly 1A o f
ou tpu t cu rren t with vo ltag e ad ju stab le fro m
1.3V ~ 35V.
FEATURES
T ypica l 1% Ou tpu t Vo lta ge T o le ran ce
Outpu t vo lta ge ad ju sta ble fro m 1. 3V ~35V
Outpu t cu rren t in exc ess o f 1A
In te rn al sho rt c irc u it p rotec tion
In te rn al o ve r te mp eratu re pro tec tio n
Outpu t tran sisto r sa fe a rea c o mp en sa tion
P in No.
1
2
3
S ymb o l
Adj.
Vout
Vin
Defin ition
Adju stab le
Outpu t
Inp ut
APPLICATIONS
P C Moth erboa rd
LCD M on ito r
Graph ic Ca rd
DVD P la yer
Netwo rk In terfa ce Ca rd /S witch
Teleco m E qu ip men t
P rin te r and o th er P erip hera l Eq u ip men t
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BL317
BLOCK DIAGRAM
ABSOLUTE MAXIMUM RATINGS (Ta =25°C ) *
Charac te ristic
S ymb o l
Max.
Unit
Vin -V ou t
37
V
P ower Dissipa tion
Pd
In te rn al limite d
Max imu m jun c tion te mpera tu re
TJ
150
°C
Storag e te mp erature
TS
150
°C
TLEAD
260
°C
ESD
4000
V
Inp ut - Ou tpu t Vo ltag e Diffe re nce
Le ad te mpe ra tu re (so ld erin g, 10 sec )
ESD (h u man bod y mod el)
Min .
-40
*: A bso lu te ma ximu m ratin gs a re stre ss ra ting s o nl y and func tio na l d e vice op era tion is
not imp lied . Th e d e vic e c ou ld be da mag ed be yo nd Abso lu te ma x imu m ra ting s.
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BL317
ELECTRICAL CHARACTERISTICS (VIN -VOUT=5V, IOUT=1 0 mA, T a=25°C ,
unless o the rwise spe cifie d. ) *
Charac te ristics
Test cond itio ns
S ymb o l
Min .
Typ .
Max.
Unit
1.20
1.25
1.30
V
Refe re nc e voltage
10 mA ≤ I O U T ≤1A
3V≤ (V I N -V O U T ) ≤37V
P D≦ 20W
VREF
Lin e reg u la tion
3V≦ V IN -VOUT≦ 3 7V
SV
0.01
0.04
%/V
Lo ad re gu la tio n
0 mA≦ IOUT≦ 1A
Si
0.2
0.4
%
Iad j
50
100
µA
Δ Iad j
0.2
5.0
µA
ILmin
3.5
10.0
mA
Adju st p in c urre n t
Adju st p in cu rren t
chan ge
3V≦ V IN -VOUT≦ 3 7V,
10 mA ≦ IOUT ≦ 1A, P D ≦
20W
Min imu m
curre n t
VIN -VOUT=37V
load
Ripp le re je c tion
f=120H z,COUT=1µ F
ta nta lu m,
(V I N -V O U T )=3V, I O U T = 1A
Te mp era ture
stab ility
TM IN≦ TJ ≦ TMAX
RMS ou tp u t no ise
(% o f V O U T )
Ta=25℃ , 1 0Hz≤ f ≤10k Hz
Therma l resistan ce ,
Junction to c ase
Therma l resistan ce ,
Junction
to
Amb ien t
SOT-223
TO -25 2
TO -22 0
TO -26 3
SOT-223
TO -25 2
TO -22 0
TO -26 3
Therma l shu tdo wn
h yste resis
RR
en
θJC
θJA
Th ys
60
75
dB
0.7
%
0.00 3
%
23
12
5
5
165
112
54
64
℃
/W
℃
/W
℃
25
*: Ma ximu m P o we r D issipa tion is P acka ge T ype and Case T e mpe ra tu re dep end en t.
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BL317
APPLICATION CIRCUIT
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BL317
CHARACTERISTICS CURVES
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BL317
OUTLINE DRAWING
SOT-223
Un it:mm
TO -22 0
Un it:mm
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BL317
TO -25 2
Un it:mm
TO -26 3
Un it:mm
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