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NJM2352D

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16
NJM2352
-1-
Ver.2003-07-18
LOW POWER SWITCHING REGULATOR
■ GENERAL DESCRIPTION ■ PACKAGE OUTLINE
The NJM2352 is the industry's first monolithic low power switching
regulators available in an 8-lead mini-DIP, and designed specifically
for battery operated instruments. They each contain a 1.3V
temperature compensated bandgap reference, adjustable free
running oscillator, voltage comparator, low battery detection circuitry,
and a 200mA switch transistor with all of the functions required to
make a complete low power switching regulator.
These regulators can achieve up to 80% efficiency in most
applications while being able to operate over a wide input supply
voltage range, 2.6V to 24V at a very low quiescent drain of 280µA.
The NJM2352 can be used as a building block in three basic
applications : step-up, step-down and inverting.
■ FEATURES
• Operating Voltage (2.6V to 24.0V)
• Low Operating Current
• Internal Low Voltage Detect Circuit
• Pulse Width Modulation Control Circuit
• Package Outline DIP8, DMP8
• Bipolar Technology
■ BLOCK DIAGRAM
NJM2352D
NJM2352M
NJM2352D
NJM2352M
NJM2352
- 2 -
Ver.2003-07-18
■ ABSOLUTE MAXIMUM RATINGS (Ta = 25ºC)
PARAMETER SYMBOL RATINGS UNIT
Supply Voltage V
+
24 V
Power Dissipation P
D
(DIP8) 500
(DMP8) 300
mW
mW
Operating Temperature Range T
opr
-40 to + 85 ºC
Storage Temperature Range T
stg
-40 to +125 ºC
■ ELECTRICAL CHARACTERISTICS
DC Electrical Characteristics (V+ = 6V, Ta = 25ºC)
PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT
Operating Current (1) I
CC
(1) - 275 350 µA
Operating Current (2) I
CC
(2)
V
+
= 24V - 400 550 µA
Reference Voltage V
REF
1.24 1.31 1.38 V
Sw. Saturation Voltage V
SW
I
SW
= 100mA - 0.2 0.4 V
Sw. Current I
SW
V
SW
= 0.4V 100 200 - mA
Sw. Leakage Current
I
SWO
V 3
PIN
= 24V
- 0.1 10 µＡ
Operating Frequency F
O
C
X
= 50pF 40 50 60 kHz
Low Battery Output Current I
LED
(L) V 1
PIN
= 1.1V, V 8
PIN
= 0.4V 300 800 - µA
Low Battery Output Leakage Current I
LED
(H) V 1
PIN
= 1.4V, V 8
PIN
= 6V - 0.1 5 µA
AC Electrical Characteristics (STEP-UP. Ta = 25ºC)
PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT
Output Voltage (9V Set) V
O(9)
V
+
= 4.5V, I
O
= 10mA 8.51 9.00 9.49 V
Load Regulation (9V Set) ∆V
O
-I
O
(9) V
+
= 4.5V, I
O
= 2 to 17mA - 100 200 mV
Line Ragulation (9V Set) ∆V
O
-V
IN
(9) V
+
= 4.5V to 8.1V, I
O
= 10mA - 50 200 mV
Output Voltage (5V Set) I
LED
(L) V
+
= 2.6V, I
O
= 10mA 4.72 5.00 5.28 V
Output Voltage (24V Set) I
LED
(H) V
+
= 12V, I
O
= 4mA 22.7 24.0 25.3 V
■ TEST CIRCUIT
D2:SBD (EK-14)
NJM2352
-
3
-
Ver.2003-07-18
■ TYPICAL APPLICATION
1. Step-Up Switching Regulator
(Low Current)
2. Step-Up Switching Regulator
(High Current)
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16

NJM2352D

Mfr. #:
Buy NJM2352D
Manufacturer:
NJR (New Japan Radio)
Description:
Switching Voltage Regulators Low Power
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
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