NR885E Datasheet, PDF (2/12 Pages) Sanken electric – Synchronous Buck Regulator

3A, 18V, 350kHz , Synchronous Buck Regulator
NR885E
Oct./30/2013
Series Lineup
Product No.
f_SW
V_IN
V_O
I_O
NR885E
350kHz
4.5V to 18V
(1) _{0.8V to 14V} (2)
3A
(1) _{The minimum input voltage shall be either of 4.5V or VO+3V, whichever is higher.}
(2) _{The I/O condition limited by the Minimum on-time (TON(MIN)).}
Absolute Maximum Ratings
Parameter
Symbol
DC input voltage
V_IN
Ratings
20
Power dissipation
(3)
P_D
1.76
Junction temperature
(4)
T_J
40 to 150
Storage temperature
Thermal resistance
(junction- Pin No. 4)
T_S
40 to 150
θ_JP
26
Thermal resistance
(junction-ambient air)
θ_JA
71
(3) _{Limited by thermal shutdown.}
(4) _{The temperature detection of thermal shutdown is about 160°C}
Units
V
W
°C
°C
Condition
Glass-epoxy board mounting
in a 30×30mm.
(copper area in a 25×25mm)
Max T_J =150°C
°C /W
°C /W
Glass-epoxy board mounting
in a 30×30mm.
(copper area in a 25×25mm)
Recommended Operating Conditions
Parameter
Symbol
DC input voltage
DC output current
(5)
V_IN
(6)
(7)
Io
Ratings
MIN
MAX
Vo+3
18
0
3.0
Units
V
A
Output voltage
Vo
0.8
14
V
Ambient operating temperature
(7)
Top
40
85
°C
(5) _{The minimum value of input voltage is taken as the larger one of either 4.5V or VO +3V.}
In the case of V_IN=V_O +1～V_O +3V , it is set to I_O = Max. 2A
(6) _{Recommended circuit refers to Typical Application Circuit.}
(7) _{To be used within the allowable package power dissipation characteristics.}
Condition
Rev.1.1
SANKEN ELECTRIC CO., LTD.
2
http://www.sanken-ele.co.jp