NJM2352D NJR, NJM2352D Datasheet - Page 5

• Manufacturer Part Number: NJM2352D
• Description: IC LOW POWER SW REG 8 DIP
• Manufacturer: NJR
• Type: Step-Down (Buck), Step-Up (Boost), Invertingr

Specifications of NJM2352D

• Internal Switch(s): No
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 5V, 9V, 24V
• Frequency - Switching: 50kHz
• Voltage - Input: 2.6 ~ 24 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Through Hole
• Package / Case: 8-DIP
• Power - Output: 300mW
• Operating Temperature Range: - 40 C to + 85 C
• Mounting Style: Through Hole
• Duty Cycle (max): 50 %
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Current - Output: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

■ DESIGN EQUSTIONS
I
V
Ripple Voltage at V
Ver.2003-07-18
1
TH
= 100µA
: low battery detection voltage.
Component
Cx (pF)
R
R
R
R
R
C
R
R
R
R
Lx
1
2
3
4
5
1
6
7
8
9
R
: I
1
= 50 to 100µA.
0.15I
0.3
F
⋅
O
F
LOAD
V
⋅
R
V
O
2.14
V
V
I
I
I
BAT
I
5
350
Step Up
LOAD
LOAD
LOAD
50(V
LOAD
35
OUT
⋅
1
F
TH
OUT
I
261Ω
⋅
=R
(2V
LOAD
O
5µ
(V
V
⋅
−
(V
⋅
I
(Hz)
−
I
⋅
⋅
⋅
REF
⋅
×
⋅
V
⋅
1
1
BAT
BAT
A
3
V
V
V
V
V
V
V
OUT
V
10
OUT
×10
⋅
BAT
OUT
OUT
BAT
OUT
OUT
REF
V
R
)
)
REF
⋅
2
2
OUT
−
6
−
V
V
BAT
V
BAT
BAT
)
)
2
Step Down
R
V
2.14
0.3
V
OUT
F
1
4F
TH
5 ⋅
261Ω
=R
O
5µ
I
I
I
V
F
⋅ (
LOAD
LOAD
LOAD
−
35
⋅
O
V
−
I
I
REF
I
×
O
1
1
V
LOAD
A
3
⋅
V
BAT
10
V
V
×10
OUT
REF
REF
R
6
)
0.15
F
O
F
⋅
O
V
I
I
LOAD
LOAD
⋅
⋅
I
BAT
0.3
I
LOAD
LOAD
R
2.14
V
Inverting
⋅
5
⋅
⋅
(V
35
⋅
(V
(V
1
TH
⋅
261Ω
V
⋅
⋅
=R
(
5µ
(V
(V
V
V
BAT
F
V
BAT
BAT
BAT
−
⋅
I
OUT
I
REF
×
O
V
1
BAT
1
BAT
BAT
A
3
V
10
⋅
+
BAT
+
+
×10
REF
V
)
+
+
V
V
2
V
6
OUT
2
V
OUT
OUT
OUT
V
OUT
OUT
)
)
)
⋅
- 5 -
)
V
)
R
2