NJM2871B Datasheet, PDF (4/9 Pages) New Japan Radio – Low Dropout Voltage Regulator

NJM2871B/72B
2 In use of ON/OFF CONTROL:
V_IN
0.1µF
V_IN
V_OUT
NJM287*B
R
CONTROL
NOISE
BYPASS
GND
V_OUT
1.0µF ^*6
Cp=0.01µF
*6 1.8V<Vo ≤ 2.6V version : Co=2.2µF(ceramic)
Vo≤1.8V version : Co=4.7µF(ceramic)
State of control terminal:
•“H”→ output is enabled.
•“L” or “open” → output is disabled.
Noise bypass Capacitance Cp
Noise bypass capacitance Cp reduces noise generated by band-gap reference circuit.
Noise level and ripple rejection will be improved when larger Cp is used.
Use of smaller Cp value may cause oscillation.
Use the Cp value of 0.01uF greater to avoid the problem.
POWER DISSIPATION vs. AMBIENT TEMPERATURE
NJM2871B/72BF Power Dissipation
(Topr=-40～+85℃,Tj=125℃,P_D=200mW(Ta≦25℃))
500
400
On Board(114.3×76.2×1.6mm, FR-4)
300
Device itself
200
100
0
-50
-25
0
25
50
Ambient Temperature Ta(_℃)
75
100
-4-
Ver.2005-01-25