BL2950/BL2951
100 mA Low-Dropout Voltage Regulator
BL2950/BL2951
DESCRIPTION
The B L2 950 /B L2 951 a re mono lith ic in te gra ted vo ltag e
reg u la to rs with lo w dro pou t vo ltag e, and lo w q uiescen t cu rren t.
It in clude s ma n y fe a tu res tha t su ita ble fo r differe n t a pp lic ations.
DIP 8
FEATURES
Fix ed ou tp ut ve rsion s, 2.5V, 3V, 3.3V , 3 .6V a nd 5V, a re
a va ila ble.
High ac cu ra c y ou tpu t volta ge .
Extre me ly lo w q u ie sce nt cu rren t an d d ro pou t voltage .
Extre me ly tigh t load an d line regu la tion.
Curren t an d the rma l limiting.
Very low te mpe ra ture c oeffic ien t.
Lo gic con tro lle d shu td own an d err flog a va ila ble fo r 8 p in
pack age .
Outpu t vo lta ge p rog ra mma b le for B L295 1.
TO -25 2
SOP 8
TO -9 2
PIN CONFIGURATION
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BL2950/BL2951
BLOCK DIAGRAM
ABSOLUTE MAXIMUM RATINGS
(Ta =25℃)
Charac te ristic
Supp ly vo lta ge
Fe ed bac k vo ltage
Shu tdo wn vo lta ge
P ower d issip ation
Opera tion ju nc tion te mpera tu re
Sto ra ge te mpe ra tu re
S ymb o l
Vcc
V
FB
V
SHDN
P
D
T
J
T
STG
*
Unit
V
V
V
W
℃
℃
Limit
-0. 3 ~ + 30
-1. 5 ~ + 30
-0. 3 ~ + 30
In te rn all y Li mited
-40 ~ +12 5
-65 ~ +15 0
*: A bso lu te ma ximu m ratin gs a re tho se va lu es be yo nd wh ich th e de vic e c ou ld be
perma nen tly d a mage d. Abso lu te max imu m ra tings a re stre ss ra ting s o nly a nd fu nc tion a l
de vic e o pe ra tion is no t imp lied .
THERMAL DATA
Charac te ristic
TO-92
TO-252
SOP 8
DIP 8
TO-92
TO-252
SOP 8
S ymb o l
Limit
160
92
180
105
83
6
45
Unit
℃/W
Junction -to -A mb ie nt
θ
JA
Junction -to -C ase
θ
JC
℃/W
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BL2950/BL2951
ELECTRICAL CHARACTERISTICS
(un le ss o th erwise spe cified : V
I N
=6V, I
L
=100
µA,
C
L
=1
µ
F ,T
J
= 25℃ )
For All Ver sion
Charac te ristic
S ymb o l
Cond ition s
T
J
= 2 5℃
Outpu t vo lta ge
V
OUT
-25
℃ ≤
T
J
≤
+8 5℃ *1
Outpu t vo lta ge
Outpu t vo lta ge
te mp era ture coe ffic ie nt
Lin e reg u la tion
Lo ad re gu la tio n
Dropo ut vo ltage
Groun d c urre n t
Dropo ut g rou nd cu rren t
Curren t limit
Outpu t
noise (1 0Hz~10 0kHz )
(B yp ass=0. 01
µF
pins 7
I
LIM IT
eN
V
OUT
TcVo
ΔV
OUT
ΔV
OUT
V
D
I
G
6V≤ V
I N
≤
30V
100µA≤ I
L
≤
1 00 mA
I
L
= 100µA
I
L
= 100mA
I
L
= 100µA
I
L
= 100mA
V
I N
=4 .5V, I
L
=10 0µA
V
O U T
=0
C
L
=1
µ
F
C
L
=2 00µ F
C
L
=3 .3µ F
*2
100µA≤ I
L
≤
1 00 mA
T
J
≤
T
J(max)
*1
Min .
V
OUT
×0.98
V
OUT
×0.98
V
OUT
×0.98
20
0.03
0.04
50
380
75
8
110
160
0.1
0.1
80
450
120
12
170
200
T yp.
V
OUT
V
OUT
V
OUT
Max
V
OUT
×1.02
V
OUT
×1.02
V
OUT
×1.02
100
0.2
0.2
150
600
140
14
200
220
430
160
100
µV
Unit
V
V
pp m
/℃
%
%
mV
µA
mA
µA
mA
to 1(BL2951)
For BL295 1 8p in Ve rsion Only
Charac te ristic
Refe re nc e voltage
Refe re nc e voltage
Fe ed bac k p in b ias cu rren t
Refe re nc e voltage
te mp era ture coe ffic ie nt
Fe ed bac k b ias cu rren t
te mp era ture coe ffic ie nt
Error Co mp ara to r
Outpu t lea kag e cu rren t
Outpu t lo w vo ltage
Thre sh old
voltage
H yste re sis
Upper
Lo we r
S ymb o l
V
REF
V
REF
I
FB
V
REF(TC)
I
FB (TC )
I
O(LEAK)
V
OL
V
THU
V
THL
V
HYS
Cond ition s
Ove r te mpe ra tu re *4
Min .
1.22
1.19
T yp.
1.235
20
50
0.1
Max
1.25
1.27
40
Unit
V
V
nA
pp m
/℃
nA/
℃
µA
mV
%VO
%VO
mV
V
O H
=3 0V
V
I N
=4 .5V, I
O L
=40 0µA
*3
*3
*3
15
3.2
1
250
7.6
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BL2950/BL2951
Continuious
Charac te ristic
Shutd ow n Inpu t
Inp ut log ic
voltage
Lo w
High
V
IL
V
IH
I
SHDN
Regu la to r ON
Regu la to r O FF
V
S H D N
= 2.4V
V
S H D N
= 30V
V
S H D N
≧
2V, V
I N
≦
30V ,
V
O U T
= 0 , Fee dba ck p in
tied to 5V Ta p.
2.0
30
450
3
50
600
10
1.3
0.7
V
µA
S ymb o l
Cond ition s
Min .
T yp.
Max
Unit
Shu tdo wn p in inpu t
curre n t
Regu la to r ou tpu t
curre n t shu td own
I
DFF
µA
* 1 .
Add ition a l c ond itio ns fo r 8 -p in ve rsio ns a re FB pin tie d to 5V
T A P
, Outpu t tie d to Sen se
(V
O U T
=5V ) a nd V
S H D N
≤0.
8V
*2 . D rop ou t Vo lta ge is defined a s th e inp u t to outpu t diffe re ntia l a t which th e ou tpu t
voltage d rop s 100 mV b elow its no mina l va lu e mea su re d a t 1V d iffe re ntia l.
*3 . C o mpa ra to r th resh o ld s are e xp re ssed in te rms o f p ercen tage value of vo ltage ou tp u t.
*4 . V
R E F
≤V
O U T
≤(V
I N
-1 V), 2.3V
≤V
I N
≤30V,
10 0µA≤I
L
≤100
mA, T
J
≤T
J ( M A X )
APPLICATION CIRCUITS
BL2950-2.5
BL2950-3.0
BL2950-3.3
BL2950-3.6
BL2950-5.0
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http://www.belling.com.cn
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BL2950/BL2951
CHARACTERISTICS CURVE
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