NR131S Datasheet, PDF (2/15 Pages) Sanken electric – Ultra light load high efficiency

Ultra light load high efficiency,VIN=17V,Current mode Step-down Io=3A Buck Regulator IC
NR130S series
Sep/10/2013
NR134S
For NR134S
C1, C2: 10μF / 25V, C4, C5: 22μF / 16V, C7: 0.1μF, C9:1800pF, C11: 220pF(Option), R1: 510kΩ , R3: 10Ω, R4: 36 kΩ, R5: 27kΩ
(VO=5.0V), R6: 12kΩ, R7:510kΩ(Option), D1: SJPJ-L4, L1: 10μH
Series Lineup
Product
Name
f_SW
V_IN
V_O
I_O
Pin No.1
Function
Pin No.2
Function
Package
NR131S
NC
IN
350kHz
4.5V to
17V
(1)
0.8V to
14V
(2) _3A
NR134S
IN
NC
SOIC8
(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 Ratings
Units
Conditions
DC input voltage
V_IN
19
V
BS terminal voltage
V_BS
24.5
V
SW terminal voltage
V_SW
19
V
FB terminal voltage
V_FB
5.5
V
EN terminal voltage
V_EN
19
V
SS terminal voltage
V_SS
7.4
V
SS terminal allowable input current
Power dissipation
Junction temperature
Issb
5
(3)
P_D1
1.42
(4)
T_J
40 ~ 150
mA
Glass-epoxy board mounting
W
in a 40×40mm.
(copper area in a 25×25mm)
Max TJ =150°C
°C
Storage temperature
T_S 40 ~ 150
Thermal resistance
(junction- Pin No. 4)
θ_JP
60.8
Thermal resistance
(junction-ambient air)
θ_JA
88.2
(3) _{Limited by thermal shutdown.}
(4) _{The temperature detection of thermal shutdown is about 165°C}
°C
°C /W
°C /W
Glass-epoxy board mounting
in a 40×40mm.
(copper area in a 25×25mm)
Rev.1.2
SANKEN ELECTRIC CO., LTD.
2
http://www.sanken-ele.co.jp