Document
NJU7665 Series
SMALL PACKAGE VOLTAGE INVERTER
■ GENERAL DESCRIPTION The NJU7665 series is a voltage inverter incorporated RC
oscillator, pre-buffer and power-MOS, which generates a polarity-converted negative voltage from +1.5V to +5.5V.
The switching frequency is fixed by internal RC oscillator and the following line-up of 3 version are available to select.
The NJU7665 series is in MTP-5 package and it is suitable for battery use items and other portable items.
■ PACKAGE OUTLINE NJU7665XF
■ FEATURES Input Voltage Switching Frequency Low Output Resistance Low Operating Current C-MOS Technology Package Outline
: 1.5 to 5.5V : fsw = 7.5k, 75k, 150kHz : 75Ω MAX. (C version, C = 1μF, VIN = 3V) : 100μA MAX. (A version)
: MTP-5
■ LINE-UP TABLE
TYPE NO.
Switching Frequency
NJU7665A
7.5kHz (typ.)
NJU7665B
75kHz (typ.)
NJU7665C
150kHz (typ.)
Supply Current 100μA (max.) 0.65mA (max.) 1.4mA (max.)
Output Resistance 1kΩ (max.) 100Ω (max.) 75Ω (max.)
■ BLOCK DIAGRAM
■ PIN CONFIGURATION
■ TERMINAL DESCRIPTION
Terminal No. 1 2 3 4 5
Symbol
VOUT VIN CGND C+
Function Output Voltage Power Supply Terminal Charge Pump Capacitor (-) Connecting Terminal Ground Terminal Charge Pump Capacitor (+) Connecting Terminal
Ver.2018-07-18
-1-
NJU7665 Series
■ ABSOLUTE MAXIMUM RATINGS
(Ta = 25ºC)
PARAMETER
SYMBOL
RATINGS
UNIT
Input Supply Voltage
VIN -0.3 to 6.0
V
Power Dissipation PD 200 mW
Operating Temperature
Topr
-40 to + 85
ºC
Storage Temperature
Tstg -55 to +125
ºC
Note1) Decoupling capacitor should be connected between VIN and GND due to the stabilized operation for the IC.
■ ELECTRICAL CHARACTERISTICS A version
PARAMETER
SYMBOL
CONDITION
Supply Current
IIN RL = ∞
Input Supply Voltage Output Resistance
VIN ROUT
-40 °C ≤ Ta ≤ 85°C IOUT = 500μA
Switching Frequency Voltage Conversion Rate
FSW VEF RL = ∞
(VIN = 3.0V, C1 = C2 = 1μF, Ta = 25°C)
MIN. TYP. MAX. UNIT
– – 100 μA
1.5 – 5.5 V
– – 1.0 kΩ
4.5 7.5 10.5 kHz
90 99.3
–
%
B version
PARAMETER Supply Current Input Supply Voltage Output Resistance Switching Frequency Voltage Conversion Rate
SYMBOL IIN VIN
ROUT FSW VEF
CONDITION RL = ∞ -40 °C ≤ Ta ≤ 85°C IOUT = 5mA
RL = ∞
(VIN = 3.0V, C1 = C2 = 1μF, Ta = 25°C)
MIN. TYP. MAX. UNIT
– – 0.65 mA
1.5 – 5.5 V
– – 100 Ω
40 75 100 kHz
90 99.3
–
%
C version
PARAMETER
SYMBOL
CONDITION
(VIN = 3.0V, C1 = C2 = 1μF, Ta = 25°C)
MIN. TYP. MAX. UNIT
Supply Current
IIN RL = ∞
– – 1.4 mA
Input Supply Voltage Output Resistance
VIN ROUT
-40 °C ≤ Ta ≤ 85°C IOUT = 10mA
1.5 – 5.5 V – – 75 Ω
Switching Frequency
FSW
80 150
Voltage Conversion Rate
VEF RL = ∞
90 99.3
NOTE2) Please minimize the wiring impedance of C+, C- terminals due to the power conversion rate.
200 –
kHz %
-2-
Ver.2018-07-18
■CHARACTERISTICS
Power Conversion Rate: PEF (%)
Power Conversion Rate vs. Output Current 100 (VIN=3V, C1=C2=C3=1 F/50V, Ta=25 C)
90
80
70
60
50
40
30
20
10
0 0
NJU7665 A version C1 to C3: GRM21BB31H105K (Murata)
1234 Output Current: IOUT (mA)
5
Power Conversion Rate: PEF (%)
Power Conversion Rate vs. Output Current 100 (VIN=3V, C1=C2=C3=1 F/50V, Ta=25 C)
90
80
70
60
50
40
30
20
10
0 0
NJU7665 B version C1 to C3: GRM21BB31H105K (Murata)
5 10 15 Output Current: IOUT (mA)
20
Power Conversion Rate: PEF (%)
Power Conversion Rate vs. Output Current 100 (VIN=3V, C1=C2=C3=1 F/50V, Ta=25 C)
90
80
70
60
50
40
30
20
10
0 0
NJU7665 C version C1 to C3: GRM21BB31H105K (Murata)
5 10 15 Output Current: IOUT (mA)
20
Ver.2018-07-18
Output Voltage: VOUT (V)
Output Voltage: VOUT (V)
Output Voltage: VOUT (V)
NJU7665 Series
Output Voltage vs. Output Current 0 (VIN=3V, C1=C2=C3=1 F/50V, Ta=25 C)
-0.5
-1
-1.5
-2
-2.5
-3
-3.5
-4
-4.5
-5 0
NJU7665 A version C1 to C3: GRM21BB31H105K (Murata)
1234 Output Current: IOUT (mA)
5
Output Voltage vs. Output Current 0 (VIN=3V, C1=C2=C3=1 F/50V, Ta=25 C)
-0.5
-1
-1.5
-2
-2.5
-3
-3.5
-4
-4.5
-5 0
NJU7665 B version C1 to C3: GRM21BB31H105K (Murata)
5 10 15 Output Current: IOUT (mA)
20
Output Voltage vs. Output Current 0 (VIN=3V, C1=C2=C3=1 F/50V, Ta=25 C)
-0.5
-1
-1.5
-2
-2.5
-3
-3.5
-4
-4.5
-5 0
NJU7665 C version C1 to C3: GRM21BB31H105K (Murata)
5 10 15 Output Current: IOUT (mA)
20
-3-
NJU7665 Series
■ APPLICATION CIRCUIT 1. Negative Voltage Output Circuit
2. Parallel Connection Circuit The following circuit reduce the output impedance.
-4-
[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.
Ver.2018-07-18
.