NJM2360
-
1
-
Ver.2007-06-08
DC/DC CONVERTER CONTROL IC
■ GENERAL DESCRIPTION ■ PACKAGE OUTLINE
The NJM2360 is a DC to DC converter control IC. Due to the
internalization of a high current output switch, 1.5A switching
operations are available. The NJM2360 is designed to be
incorporated in step-up, step-down and inverting applications with a
minimum number of external components. Output current is limited
by an external resistor.
■ FEATURES
• Output Switch Current 1.5A(MAX)
• Operating Voltage 2.5V* to 40V
• Internal Over Current Limit Circuit
• Supply Voltage V+ 2.5V* to 40V
• Output Voltage VOR 1.25V to 40V
• Oscillator Frequency fOSC 100Hz to 100kHz
• Package Outline DIP8, DMP8
*Ta =25°C. At low temperature, the minimum voltage is 3.0V.
■ PIN CONFIGURATION
■ BLOCK DIAGRAM
NJM2360D NJM2360M
NJM2360D
NJM2360M
NJM2360
-
2
-Ver.2007-06-08
■ ABSOLUTE MAXIMUM RATINGS (Ta = 25ºC)
PARAMETER SYMBOL RATINGS UNIT
Supply Voltage V+ 40 V
Comparator Input Voltage Range VIR -0.3 to V+ V
Power Dissipation PD (DIP8) 700
(DMP8) 600 (note1)
mW
mW
Switch Current ISW 1.5 A
Operating Temperature Range Topr -40 to + 85 ºC
Storage Temperature Range Tstg -40 to +125 ºC
(note 1) At on PC board
■ ELECTRICAL CHARACTERISTICS
● DC Characteristics (V+ = 5V, Ta = 25ºC)
PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT
Operating Current ICC 5V ≤ V+ ≤ 40V, CT = 0.001µF
SI = V+, INVIN > Vth, ES = GND - 2.4 3.5 mA
Oscillator
Charge Current Ichg 5V ≤ V+ ≤ 40V 20 35 50 µA
Discharge Current Idischg 5V ≤ V+ ≤ 40V 150 200 250 µA
Voltage Swing VOSC - 0.5 - VP-P
Discharge to Charge Current Ratio Idischg/Ichg S
I = V+ - 6 - -
Peak Current Sense Voltage VIPK(sense) I
chg = Idischg 250 300 350 mV
Output Switch (Note 2)
Saturation Voltage 1 VCE(sat) 1 Darlington Connection (CS = CD)
ISW = 1.0A - 1.0 1.3 V
Saturation Voltage 2 VCE(sat) 2 ISW = 1.0A, IC(driver) = 50mA
(Forced β･
=
･ 20) - 0.5 0.7 V
DC Current Gain hFE I
SW = 1.0A, VCE = 5.0V 35 120 - -
Collector Off-State Current IC(off) V
CE = 40V - 10 - nA
Comparator
Threshold Voltage Vth 1.18 1.25 1.32 V
Input Bias Current IIB V
IN = 0V - 40 400 nA
Note 2 : Output switch tests are performed under pulsed conditions to minimize power dissipation.
NJM2360
-
3
-
Ver.2007-06-08
■ TYPICAL APPLICATION
1. Step-Up Converter
*D1 : SBD (EK14)
2. Step-Down Converter
*D1 : SBD (EK14)
NJM2360
-
4
-Ver.2007-06-08
■ TYPICAL APPLICATIONS
3. Step-Up Converter (High Current)
4. Step-Down Converter (High Current)
5. Inverting Converter
*D1 : SBD (EK14)
NJM2360
-
5
-
Ver.2007-06-08
Fig. 1 Block Diagram
Fig. 2 Timing Chart
■ POWER DISSIPATION VS. TEMPERATURE
NJM2360
-
6
-Ver.2007-06-08
■ TYPICAL CHARACTERISTICS
Oscillator Frequency vs. Timing Capacitor Switching Time vs. Timing Capacitor
Operating Current vs. Operating Voltage
Switch Saturatin Voltage 2
vs. Collector Current (β･
=
･20)
Switch Saturation Voltage 1
vs. Collector Current (Darlington)
Saturation Voltage 1 vs. Temperature
NJM2360
-
7
-
Ver.2007-06-08
■ TYPICAL CHARACTERISTICS
Saturation Voltage 2 vs. Temperature Operating Current vs. Temperature
Discharge to Charge Current Ratio
vs. Temperature Threshold Voltage vs. Temperature
NJM2360
-
8
-Ver.2007-06-08
■ TYPICAL CHARACTERISTICS (Application)
1. Step-Up Converter
Output Voltage vs. Input Voltage Output Voltage vs. Output Current
2. Step-Down Converter
Output Voltage vs. Input Voltage
Output Voltage vs. Output Current
[CAUTION]
The specifications on this databook are only
given for information , without any guarantee
as regards either mistakes or omissions. The
application circuits in this databook are
described only to show representative usages
of the product and not intended for the
guarantee or permission of any right including
the industrial rights.
