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
Inp ut - Ou tpu t Vo ltag e Diffe re nce
P ower Dissipa tion
Max imu m jun c tion te mpera tu re
Storag e te mp erature
Le ad te mpe ra tu re (so ld erin g, 10 sec )
ESD (h u man bod y mod el)
S ymb o l
Vin -V ou t
Pd
T
J
T
S
T
LEAD
ESD
Min .
Max.
37
Unit
V
In te rn al limite d
150
-40
150
260
4000
°C
°C
°C
V
*: 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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V1.0
BL317
ELECTRICAL CHARACTERISTICS
(VIN -VOUT=5V, IOUT=1 0 mA, T a=25°C ,
unless o the rwise spe cifie d. ) *
Charac te ristics
Refe re nc e voltage
Lin e reg u la tion
Lo ad re gu la tio n
Adju st p in c urre n t
Adju st p in cu rren t
chan ge
Min imu m
curre n t
load
Test cond itio ns
10 mA
≤
I
O U T
≤1A
3V≤ (V
I N
-V
O U T
)
≤37V
P D≦ 20W
3V≦ V IN -VOUT≦ 3 7V
0 mA≦ IOUT≦ 1A
S ymb o l
V
REF
S
V
Si
Iad j
Min .
1.20
Typ .
1.25
0.01
0.2
50
0.2
3.5
Max.
1.30
0.04
0.4
100
5.0
10.0
Unit
V
%/V
%
µA
µA
mA
dB
%
%
℃
/W
℃
/W
℃
3V≦ V IN -VOUT≦ 3 7V,
10 mA
≦
IOUT
≦
1A, P D
≦
20W
VIN -VOUT=37V
f=120H z,COUT=1µ F
ta nta lu m,
(V
I N
-V
O U T
)=3V, I
O U T
= 1A
TM IN≦ TJ
≦
TMAX
Ta=25℃ , 1 0Hz≤ f
≤10k
Hz
SOT-223
TO -25 2
TO -22 0
TO -26 3
SOT-223
TO -25 2
TO -22 0
TO -26 3
Δ
Iad j
I
Lmin
RR
60
Ripp le re je c tion
Te mp era ture
stab ility
RMS ou tp u t no ise
(% o f V
O U T
)
Therma l resistan ce ,
Junction to c ase
Therma l resistan ce ,
Junction
to
Amb ien t
Therma l shu tdo wn
h yste resis
75
0.7
en
0.00 3
23
12
5
5
165
112
54
64
25
θ
JC
θ
JA
Th ys
*: 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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