Fujitsu MB3769A Switching regulator controller Datasheet

FUJITSU SEMICONDUCTOR
DATA SHEET
DS04-27202-3E
ASSP
SWITCHING REGULATOR
CONTROLLER
MB3769A
The Fujitsu MB3769A is a pulse-width-modulation controller which is applied to
fixed frequency pulse modulation technique. The MB3769A contains wide band
width Op-Amp and high speed comparator to construct very high speed switching
regulator system up to 700 kHz. Output is suitable for power MOS FET drive
owing to adoption of totem pole output.
The MB3769A provides stand-by mode at low voltage power supply when it is
applied in primary control system.
• High frequency oscillator (f = 1 to 700 kHz)
• On-chip wide band frequency operation amplifier (BW = 8 MHz typ.)
• On-chip high speed comparator (td = 120 ns typ.)
PLASTIC DIP 16-PIN
(DIP-16P-M04)
• Internal reference voltage generator provides a stable reference supply
(5 V ± 2%)
• Low power dissipation (1.5 mA typ. at standby mode, 8 mA typ. at operating
mode)
• Output current ± 100 mA (± 600 mA at peak)
• High speed switching operation (tr = 60 ns, tf = 30 ns, CL = 1000 pF typ.)
• Adjustable Dead-time
• On-chip soft start and quick shut down functions
• Internal circuitry prohibits double pulse at dynamic current limit operation
• Under voltage lock out function (OFF to ON: 10 V typ. ON to OFF: 8 V typ.)
PLASTIC FPT 16-PIN
(FPT-16P-M06)
• On-chip output shut down circuit with latch function at over voltage
• On-chip Zener diode (15 V)
This device contains circuitry to protect the inputs against
damage due to high static voltages or electric fields.
However, it is advised that normal precautions be taken
to avoid application of any voltage higher than maximum
rated voltages to this high impedance circuit.
1
MB3769A
■
PIN ASSIGNMENT
(TOP VIEW)
■
+IN (OP)
1
16
+IN (C)
-IN (OP)
2
15
-IN (C)
FB
3
14
VREF
DTC
4
13
OVP
CT
5
12
VCC
RT
6
11
VZ
GND
7
10
VH
VL
8
9
OUT
ABSOLUTE MAXIMUM RATINGS (See NOTE)
Rating
Symbol
Value
Unit
Power Supply Voltage
VCC
20
V
Output Current
IOUT
120 (660*)
mA
Operation Amp. Input Voltage
Vin (OP)
VCC + 0.3 (≤ 20)
V
Power Dissipation: DIP
: FPT
PD
1000**
mW
PD
620***
mW
Operating Temp. : DIP
: FPT
TOP
-30 to +85
°C
TOP
-30 to +75
°C
Storage Temp.
TSTG
-55 to +125
°C
*
**
***
:
:
:
Duty ≤ 5%
TA = 25 °C
TA = 25 °C, FPT package is mounted on the epoxy board.
(4 cm x 4 cm x 0.15 cm)
NOTE : Permanent device damage may occur if the above Absolute Maximum Ratings are exceeded. Functional operation
should be restricted to the conditions as detailed in the operational sections data sheet. Exposure to absolute maximum
rating conditions for extended periods may affect device reliability.
2
MB3769A
■
BLOCK DIAGRAM
Fig. 1 - MB3769A Block Diagram
Over Current Detection Comparator
-IN (C) 15
S
+IN (C) 16
Q
+
R
1.85 V
+
VREF
1.8 V
DTC
+
+
+ PWM
+ Comparator
+
10
VH
9
OUT
8
VL
-
4
STB
STB
FB
3
+IN (OP)
1
-IN (OP)
2
OVP
13
+
Error
Amp.
-
+
Over Voltage Detector
S
Q
Power
off
1.5 V to 3.5 V
2.5 V
CT
5
RT
6
V CC
(2.5 V)
Triangle Wave
Oscillator
+
8/10 V
STB
-
12
15.4 V
VZ
R
5.0 + 0.1 V
Reference
Regulator
11
+
14
VREF
30 kΩ
GND
7
3
MB3769A
■
RECOMMENDED OPERATING CONDITION
DIP package
Parameter
FPT package
SymboL
Unit
Min
Typ
Max
Min
Typ
Max
Power Supply Voltage
VCC
12
15
18
12
15
18
V
Output Current (DC)
IOUT
-100
-
100
-100
-
100
mA
Output Current (Peak)
IOUT PEAK
-600
-
600
-600
-
600
mA
Operation Amp. Input voltage
VINOP
-0.2
0 to VREF
VCC -3
-0.2
0 to
VREF
VCC-3
V
FB Sink Current
ISINK
-
-
0.3
-
-
0.3
mA
FB Source Current
ISOURCE
-
-
2
-
-
2
mA
VINC+
-0.3
0 to 3
VCC
-0.3
0 to 3
VCC
V
VINC-
-0.3
0 to 2
2.5
-0.3
0 to 2
2.5
V
Reference Section Output Current
IREF
-
5
10
-
2
10
mA
Timing Resistor
RT
9
18
50
9
18
50
kΩ
Timing Capacitor
CT
100
680
106
100
680
106
pF
Oscillator Frequency
fOSC
1
100
700
1
100
700
kHz
Zener Current
IZ
-
-
5
-
-
5
mA
Operating Temp.
TOP
-30
25
85
-30
25
75
°C
Comparator Input Voltage
4
MB3769A
■
ELECTRICAL CHARACTERISTICS
(VCC=15V, TA=25°C)
Value
Parameter
Output Voltage
Unit
Min
Typ
Max
4.9
5.0
5.1
V
IREF = 1 mA
∆ VRIN
12 V ≤ VCC ≤ 18 V
-
2
15
mV
∆ VRLD
1 mA ≤ IREF ≤10 mA
-
-1
-15
mV
∆ VRTEMP
-30 °C ≤ TA ≤ 85 °C
-
±200
±750
µV/ °C
Short Circuit Output Current
ISC
VREF = 0 V
15
40
-
mA
Oscillator Frequency
fOSC
RT=18 kΩ
CT=680 pF
90
100
110
kHz
Voltage Stability
∆ fOSCIN
12 V ≤ VCC ≤ 18 V
-
±0.03
-
%
Temp. Stability
∆ fOSC /∆ T
-30 °C ≤ TA ≤ 85 °C
-
±2
-
%
-
2
10
µA
Input Bias Current
Max. Duty Cycle
Dead -time Duty Cycle Set
Control
0% Duty
Section
Input
Cycle
Threshold
Max. Duty
Voltage
Cycle
Error
Amplifier
Section
Condition
VREF
Input Regulation
Reference
Load Regulation
Section
Temp. Stability
Oscillator
Section
Symbol
ID
Dmax
Vd = 1.5 V
75
80
85
%
Dset
Vd = 0.5 VREF
45
50
55
%
VDO
-
-
3.5
3.8
V
VDM
-
1.55
1.85
-
V
4.5
-
-
V
Discharge Voltage
VDH
VCC= 7 V,
IDTC= -0.3 mA
Input Offset Voltage
VIO (OP)
V3 = 2.5 V
-
±2
±10
mV
Input Offset Current
IIO (OP)
V3 = 2.5 V
-
±30
±300
nA
Input Bias Current
IIR (OP)
V3 = 2.5 V
-1
-0.3
-
µA
Common-Mode Input Voltage
VCM (OP)
12 V ≤ VCC ≤ 18 V
-0.2
-
VCC -3
V
Voltage Gain
AV (OP)
0.5 V ≤ V3 ≤ 4 V
70
90
-
dB
Band Width
BW
AV = 0dB
-
8
-
MHz
Slew Rate
SR
RL = 10 kΩ, AV = 0dB
-
6
-
V/µs
Common-Mode Rejection Rate
CMR
VIN = 0 to 10 V
65
80
-
dB
“H” Level Output Voltage
VOH
I3 = -2 mA
4.0
4.6
-
V
“L” Level Output Voltage
VOL
I3 = 0.3 mA
-
0.1
0.5
V
5
MB3769A
■
ELECTRICAL CHARACTERISTICS (Continued)
(VCC=15V, TA=25°C)
Value
Parameter
Current
Comparator
PWM
Comparator
Section
Output
Section
Over
Voltage
Detector
Under Voltage
Out Stop
Supply
Current
* : VCC = 8V
6
Symbol
Condition
Unit
Min
Typ
Max
Input Offset Voltage
VIO (C)
VIN = 1 V
-
±5
±15
mV
Input Bias Current
IIB (C)
VIN = 1 V
-5
-1
-
µA
Common-Mode Input VoltVCM (C)
age
-
0
-
2.5
V
Voltage Gain
AV (C)
-
-
200
-
V/V
Response Time
td
50 mV over drive
-
120
250
ns
0% Duty Cycle
VOPO
Max. Duty Cycle
VOPM
“H” Level Output Voltage
RT = 18 kΩ
CT = 680 pF
-
3.5
3.8
V
1.55
1.85
-
V
VH
IOUT = -100 mA
12.5
13.5
-
V
“L” Level Output Voltage
VL
IOUT = 100 mA
-
1.1
1.3
V
Rise Time
tr
CL = 1000 pF, RL = ∞
-
60
120
ns
Fall Time
tf
CL = 1000 pF, RL = ∞
-
30
80
ns
Threshold Voltage
VOVP
-
2.4
2.5
2.6
V
Input Current
IIOVP
VIN = 0 V
-1.0
-0.2
-
µA
VCC Reset
VCC RST
-
2.0
3.0
4.5
V
Off to On
VTHH
-
9.2
10.0
10.8
V
On to Off
VTHL
-
7.2
8.0
8.8
V
Standby *
ISTB
RT = 18 kΩ
4 pin Open
-
1.5
2.0
mA
Operating
ICC
RT = 18 kW
-
8.0
12.0
mA
Zener Voltage
VZ
IZ = 1 mA
-
15.4
-
V
Zener Current
IZ
V11-7 = 1 V
-
0.03
-
mA
MB3769A
Fig. 2 - MB3769A Test Circuit
1.0 V
15.0 V
OUTPUT
10 kΩ
16
+IN (C)
15
14
-IN (C)
VREF
13
12
11
10
OVP
VCC
VZ
VH
COMP
in
9
OUT
MB3769A
+IN (OP)
1
-IN (OP)
FB
DTC
3
4
2
CT
RT
GND
VL
5
6
7
8
680 pF
VFB
1000 pF
18 kΩ
VDTC
TEST INPUT
<tr, tf, td>
3.5 V typ.
Voltage at CT
1.5 V typ.
1.05 V
tr of COMP-in should
be within 20 ns.
1.0 V
COMP in
0.95 V
90%
50%
OUTPUT
10%
tr
tf
td
7
MB3769A
Fig. 3 - MB3769A Operating Timing
Soft Start Operation
Dead-Time
Input Voltage
Quick Shutdown Operation
3.5 V
1.85V
Triangle Wave
Form
Error Amp.
Output
1.5 V
PWM Comparator
Output
Output Wave
Form
Comp. Current
-in Wave Form
Comp. Current
+in Wave Form
(1 V)
Comp. Current
Latch Output
2.5 V
Voltage at OVP
OVP Latch
Power Supply
Voltage
(15 V)
10 V (typ.)
0V
8V
(typ.)
Over Current
Detector
Standby Mode
Over Voltage Detector
Latch OFF
8
3V
Over Voltage
Detector
Standby
Mode
MB3769A
■
FUNCTIONS
1. Error Amplifier
The error amplifier detects the output voltage of the switching regulator.
The error amplifier uses a high-speed operational amplifier with an 8 MHz bandwidth (typical) and 6 V/ms slew rate (typical).
For ease of use, the common mode input voltage ranges from -0.2 V to VCC-3 V. Figure 4 shows the equivalent circuit.
Fig. 4 - MB3769A Equivalent Circuit Differential Amp.
VCC
VREF
To PWM
Comp.
-IN (OP)
150 Ω
+IN (OP)
700 µA
GND
Protection element
2. Overcurrent Detection Comparator
There are two methods for protection of the output transistor of this device from overcurrents; one restricts the transistor’s ontime if an overcurrent that flows through the output transistor is detected from an average output current, and the other detects
an overcurrent in the external transistor (FET) and shuts the output down instantaneously. Using average output currents, the
peak current of the external transistor (FET) cannot be detected, so an output transistor with a large safe operation area (SOA)
margin is required.
For the method of detecting overcurrents in the external transistor (FET), the output transistor can be protected against a shorted
filter capacitor or power-on surge current.
The MB3769A uses dynamic current limiting to detect overcurrents in the output transistor (FET). A high-speed comparator
and flip-flop are built-in.
To detect overcurrents, compare the voltage at +IN(C) of current detection resistor connected the source of the output transistor
(FET), with the reference voltage (connected to -IN(C) ) using a comparator. To prevent output oscillation during overcurrent,
flip-flop circuit protects against double pulses occurring within a cycle.
The output of overcurrent detector is ORed with other signals at the PWM comparator. See the example Application Example
for details on use.
Figure 5 shows the equivalent circuit of the over-current detection comparator.
9
MB3769A
Fig. 5 - MB3769A Equivalent Circuit Over Current Detection Comparator
VREF
To PWM
Comp.
-IN (C)
+IN (C)
Protection element
3. DTC: Dead Time Control (Soft-Start and Quick Shutdown)
The dead time control terminal and the error amplifier output are connected to the PWM comparator.
The maximum duty cycle for VDTC (voltage applied to pin 4) is obtained from the following formula (approximate value at low
frequency):
Duty Cycle = (3.5 - VDTC) x 50 (%) [0% ≤ duty cycle ≤ DMAX (80%) ]
The dead time control terminal is used to provide soft start.
In Figure 6, the DTC terminal is connected to the VREF terminal through R and C. Because capacitor C does not charge
instantaneously when the power is turned on, the output transistor is kept turned off. The DTC input voltage and the output
pulse width increase gradually according to the RC time constant so that the control system operates safely.
Fig. 6 - MB3769A Soft Start Function
VREF
VREF
C
C
R1
DTC
DTC
R2
R
Soft Start
Soft Start + DTC
The quick shutdown function prevents soft start malfunction when the power is turned off and on quickly. After the power is shut
down, soft start is disabled because the DTC terminal has low electric potential from the beginning if the power is turned on
again before the capacitor is discharged. The MB3769A prevents this by turning on the discharge transistor to quickly discharge
the capacitor in the stand-by mode.
10
MB3769A
4. Triangular Wave Oscillator
The oscillation frequency is expressed by the following formula:
fOSC ~
1
0.8 x CT x RT + 0.0002 ms
[kHz] CT :µF
RT :kΩ
For master/slave synchronized operation of several MB3769As, the CT and RT terminals of the master MB3769A are connected
in the usual way and the CT terminals of the master and slave device (s) are connected together. The slave MB3769A’s RT
terminal is connected to it’s VREF terminal to disable the slave’s oscillator. In this case, set 50/n kΩ (n is the number of master
and slave ICs) to the upper limit of RT so that internal bias currents do not stop the master oscillation.
Fig. 7 - MB3769A Synchronized Operation
master
RT
slave
CT
VREF
RT
CT
5. Overvoltage Detector
The overvoltage detection circuit shuts the system power down if the switching regulator’s output voltage is abnormal or if
abnormal voltage is appeared. The reference voltage is 2.5 V (VREF /2). The system power is shut down if the voltage at pin
13 rises above 2.5 V. The output is kept shut down by the latching circuit until the power supply is turned off (see Figure 3).
6. Stand-by Mode and Under-Voltage Lockout (UVLO)
Generally, VGS > 6 to 8 V is required to use power MOSFET for switching. UVLO is set so that output is on at VCC ≥ 10 V
(standard) when the power is turned on and is off at VCC ≤ 8 V (standard) when the power is turned off.
In the stand-by mode, the power supply current is limited to 2 mA or less when the output is inhibited by the UVLO circuit. When
the MB3769A is operated from the 100 VAC line, the power supply current is supplied through resistor R (Figure 8). That is, the
IC power supply current is supplied by the AC line through resistor R until operation starts. Current is then supplied from the
transformer tertiary winding, eliminating the need for a second power supply.
Two volts (typical) of hysteresis are provided for return from operation mode to stand-by mode not to return to stand-by mode
until output power is turned on or to avoid malfunction due to noise.
11
MB3769A
Fig. 8 - MB3769A Primary Control
R
C
MB3769A
7. Output Section
Because the output terminal (pin 9) carries a large current, the collector and emitter of the output transistor are brought out to
the VH and VL terminals. In principle, VH is connected to VCC and VL is connected to GND, but VH can be supplied from another
power supply (4 to 18 V). Note that VL and GND should be connected as close to the IC package as possible. A capacitor of
0.1 µF or more is inserted between VH and VL (see Figure 9).
Fig. 9 - MB3769A Typical Connection Circuit Of Output
12
10
9
7
8
≥ 0.1 µF
12
MB3769A
■
APPLICATION EXAMPLE
Fig. 10 - MB3769A DC - DC Convertor
12 to 18 V
5V
1A
3.6 kΩ
3.3 kΩ
0.1 µF
10 kΩ
330 pF
100 kΩ
1+IN (OP)
+IN (C) 16
2-IN (OP)
IN (C) 15
2.4 kΩ
20 kΩ
VREF 14
3FB
5CT
OVP 13
MB3769A
VCC 12
6RT
VZ 11
7GND
VH 10
4DTC
OUT 9
8VL
R
S
220 pF
C
51 kΩ
10 kΩ 5.1 kΩ
18 kΩ
1Ω
Overcurrent Protection Circuit
The waveform at the output FET source terminal is shown in Figure 11. The RC time constant must be chosen so that the
voltage glitch in the waveform does not cause erroneous overcurrent detection. This time constant is should be from 5 to 100
ns. A detection current value depends on R or C because a waveform is weakened. To keep this glitch as small as possible,
the rectifiers on the transformer secondary winding must be the fast-recovery type.
Fig. 11 - MB3769A Output FET Source Point
Glitch
Point S waveform
13
MB3769A
Fig. 12 -Primary Control
100 VAC
R
+
1 +IN(OP) +IN(C) 16
47 kΩ
2 -IN(OP) -IN(C) 15
22
kΩ
3 FB
VREF 14
4 DTC
OVP 13
5 CT
VCC 12
6 RT
VZ 11
7 GND
VH 10
+
4.7 µF
22
kΩ 680 18
pF kΩ
15 V
*:The resistance (22 Ω)
*
22
Ω
10 kΩ
15
kΩ
9
8
as an output current
limiter at pin 9 is required when driving
the FET which is more
than 1000 pF (CGS).
Fig. 13 -Secondly Control
0V
Secondly power supply
5.1 kΩ
12 V
43
kΩ
10
kΩ
39
kΩ 1000
27 pF
kΩ
1 +IN(OP) +IN(C) 16
51
kΩ
2 -IN(OP) -IN(C) 15
3 FB
VREF 14
4 DTC
OVP 13
5 CT
VCC 12
6 RT
VZ 11
7 GND
VH 10
8 VL
10
kΩ
14
680
pF
18
kΩ
OUT 9
MB3769A
■
SHORT PROTECTION CIRCUIT
The system power can be shut down to protect the output against intermittent short-circuits or continuous overloads. This
protection circuit can be configured using the OVP input as shown in Figure 14.
Fig. 14 -Case I. (Over Protection Input)
Primary Mode
15 kΩ
IN-B
8
3
8.2 kΩ
IN-A
PC2
4
MB3761
1
9
V0
(5V output)
PC1
OUT-B
500 Ω
HYS-A
6
5
500 Ω
6.8 kΩ
MB3769A
14
20 kΩ
PC2
13
7
1 µF
10 kΩ
PC1
100 kΩ
Fig. 15 -Case II. (Over Protection Input)
Secondly Mode
V0 (5V output)
14
VREF
MB3769A
20 kΩ
15 kΩ
IN-B
8
13
6 OUT-B
3
OVP
MB3761
8.2 kΩ
IN-A
1
2
5
6.8 kΩ
HYS-A
1 µF
200 kΩ
15
MB3769A
■
HOW TO SYNCHRONIZE WITH OUTSIDE CLOCK
The MB3769A oscillator circuit is shown in Figure 16. CT charge and discharge currents are expressed by the following formula:
5V
ICT = ±2 x I1 = ± RT
Fig. 16 -Oscillator Circuit
VREF
500
Ω
1 kΩ
500 Ω
+
-
I1
2 x I1
2 x I1
S
3.5 V
Q
R
ICT
RT
-
+
CT
6
5
(4 x I1)
+
2.5 V
300
Ω
1.5 V
150Ω
This circuit shows that if the voltage at the CT terminal is set to 1.5 V or less, one oscillation cycle ends and the next cycle starts.
An example of an external synchronous clock circuit is shown in Figure 17.
Fig. 17 -Typical Connection of Synchronized Outside Clock Circuit
tcycle
ex. MB74HC04
5
VP
MB3769A
6
R(5.1 k Ω)
RT
CT
VP
clamp circuit
(VL)
tP
tcycle = 2.5 µs (fEXT = 400 kHz)
tP
= 0.5 µs
RT = 11 k Ω
The Figure 18 shows the CT terminal waveform.
VTH may be near 2.5 V. In this case, the maximum duty cycle is restricted
as shown in the formula below if tP’ = 0.
Fig. 18 -Voltage Waveform at CT
VCT
Dmax= (3.5 - 1.85) + (3.5 - VTH)
(3.5 - VL ) + (3.5 - VTH )
3.5 V
VTH
( .. 2.5 V)
1.85
≤ 59% (VL = 0 V: No clamp circuit)
VL
When VTH = 2.5 V, CT can be provided by followings.
tcycle - tP =
16
1
fOSC
x (3.5 - VL) + (3.5 - VTH)
fOSC(3.5 - 1.5 ) x 2
tP’
MB3769A
fOSC ~
CT ~
1
0.8 x CT x RT
1
x
0.8 x RT
4
4.5 - VL
(tcycle - tP ) [pF] (RT: kΩ, tcycle, tP: ns)
Make VL high for a large duty cycle for the clamp circuit. The circuits below can be used because the clamp voltage must be
much lower than 1.5 V.
Fig. 19 -Clamp Circuit
VREF
R1 (4.7 kΩ)
VREF
8
(1.2 V)
3
(1.2 V)
0.1 µF
A
R2 (1.2 kΩ)
820 Ω
0.1 µF
MB3761
4
5
B
In circuit A, R1 and R2 must be determined considering the effects of tP, R, or RT.
The transistor saturation voltage must be very small (<0.15 V) for any clamp circuit, so a transistor with a very small VCE (sat)
should be used.
17
MB3769A
■
SYNCHRONIZED OUTSIDE CLOCK CIRCUIT
Fig. 20
5V
1.No Clamp Circuit (Connect with GND)
1V
VP (5 V/div)
CT = 150 pF + Prove Capacitor (~ 15 pF)
RT = 11 kΩ
5 pin
CT (1 V/div)
MB74HC04
CT
150 pF
VP
5.1 kΩ
GND Level (CT)
OUT (10 V/div)
10 V
500 nS
Fig. 21
5V
2.Clamp Circuit A (Dividing Resistor)
1V
VP (5 V/div)
CT = 220 pF + Prove capacitor (~ 15 pF)
RT = 11 kΩ
CT (1 V/div)
5 pin
CT
220 pF
GND Level (CT)
MB74HC04
VP
5.1 kΩ
VREF
4.7 kΩ
OUT (10 V/div)
10 V
0.1
µF
500 nS
1.2 kΩ
Fig. 22
5V
3.Clamp Circuit B (Apply MB3761)
1V
VP (5 V/div)
CT (1 V/div)
CT = 220 pF + Prove capacitor (~ 15 pF)
RT = 11 kΩ
5 pin
CT
220 pF
MB74HC04
VP
5.1 kΩ
VREF
GND Level (CT)
820 Ω
OUT (10 V/div)
10 V
18
500 nS
0.1 µF
8
3
MB3761
4
5
MB3769A
Fig. 23 -Test Circuit
15 V (VCC)
12
14
2
15
3
2.5 V
10
1
2.4 kΩ
2.4 kΩ
MB3769A
16
4
5
9
OUT
6
11 kΩ
7
8 13
19
MB3769A
■
TYPICAL PERFORMANCE CHARACTERISTICS
OVP
operating
V13 = 5 V
Normal
operating
V13 = 0 V
10.0
8.0
OVP
operating
6.0
Fig. 25 -Standby Current vs.Temp.
2
4.0
2.0
0.0
0.0
4.0
8.0
12.0
16.0
Standly Current ISTB (mA)
Power Supply Current ICC (mA)
Fig. 24 -Power Supply Current vs.
Power Supply Voltage
(Low Voltage stop of VCC)
20.0
1
0
-30
Power Supply Voltage VCC (V)
Fig. 26 -Reference Voltage vs. Temp.
±750 µV/C
5.0
4.9
0
-30
“H” level Output Voltage VOH (V)
20
25
50
Temp. TA (°C)
VCC = 15 V
TA = 25 °C
2
1
0
0.2
0.4
0.6
“L” level Output Current IOL (mA)
0
25
50
Temp. TA (°C)
5
85
VCC = 15 V
TA = 25 °C
4
3
2
1
2
85
3
Fig. 28 -“H” level Output Voltage vs.
“H” level Output Current
0
0
Fig. 27 -“L” level Output Voltage vs.
“L” level Output Current
VCC = 15 V
IREF = 1 mA
“L” level Output Voltage VOL (V)
Reference Voltage VREF (V)
5.1
VCC = 8 V
4
6
8
“H” level Output Current IOH (mA)
10
0.8
MB3769A
Fig. 29 -Oscillator Frequency vs. RT, CT
700
500
CT = 100 pF
400
200
CT = 680 pF
CT = 220 pF
100
90
80
70 CT = 1000 pF
60
Fig. 30 -“H”, “L” level Output Voltage vs.
Oscillator Frequency
4
VH
VCC = 15 V
TA = 25 °C
3
VH
VL
2
VL
1
0
20 k
50 k
100 k 200 k
500 k
1M
Frequency fOSC (Hz)
Fig. 32 -Oscillator Frequency vs. Temp.
VCC = 15 V
50
40
30
CT = 2200 pF
20
7 8 9 10
20
30
40 50 60 70
RT (kΩ)
Oscillator Frequency fOSC (%)
Oscillator Frequency fOSC (kHz)
300
“H”, “L” level Output Voltage VH, VL (V)
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
100
fOSC = 200 kHz
100 kHz
2
300 kHz
500 kHz
0
-2
Target
fOSC = 100 kHz
±2 % typ.
0
25
50
85
Temp. TA (°C)
VCC = 15 V
CT = 1000 pF
TA = 25 °C
80
4
-4
-30
Fig. 31 -Duty Cycle vs. Dead Time Control
Voltage
Fig. 33 -Dead Time Control Voltage vs.
Current(Standby Mode)
fOSC = 500 kHz
5.0
60
Duty Cycle (%)
Dead Time Control Voltage VDTC (V)
■
40
20
4.0
VCC = 7 V
TA = 25 °C
3.0
2.0
1.0
0
0
1
2
3
4
Dead Time Control Voltage VDTC (V)
5
0
-0.2 -0.4 -0.6 -0.8 -1.0 -1.2
Dead Time Control Current IDTC (mA)
21
MB3769A
■
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
Fig. 34 -Gain/Phase vs. Frequency
(Set Gv = 60 dB)
VCC = 15 V
TA = 25 °C
Gain (dB)
40
Fig. 35 -Duty cycle vs. Temp.
-180
VCC = 15 V
CL = 1000 pF
VDTC = 2.5 V
-240
Phase
20
-300
Gain
0
55
-360
Phase (deg)
Duty Cycle (%)
60
fOSC = 200 kHz
50
fOSC = 500 kHz
10 k
100 k
1M
10 M
45
0
-30
Frequency f (Hz)
0
25
50
85
Temp. TA (°C)
VCC = 15 V
TA = 25 °C
1.5
Fig. 38 -tr/tf of Output and td of
Comparator vs. Temp.
160
140
0.5
td
120
0
0
100
200
300
400
500
“L” level Output Current IOL (mA)
600
“H” level Output Voltage VOH (V)
Fig. 37 -“H” level Output Voltage vs.
“H” level Output Current
22
VCC = 15 V
CL = 1000 pF
1.0
14.0
VCC = 15 V
TA = 25 °C
tr/tf/td (ns)
“L” level Output Voltage VOL (V)
Fig. 36 -“L” level Output Voltage vs.
“L” level Output Current
100
80
tr
60
40
13.5
tf
20
13.0
0
-30
12.5
0
0
100
200 300
400
500
“H” level Output Current IOH (mA)
600
0
-25
50
Temp. TA (°C)
85
MB3769A
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
Fig. 39 -OVP Latch Standby Power
Supply Current vs. Temp.
4
3
2
0 20
40 60 80 100
Temp. TA (°C)
OVP Supply Voltage Reset (V)
VCC = 8 V
4 pin open
13 pin = 3 V
5
0
-40 -20
Fig. 40 -OVP Supply Voltage
Reset vs. Temp.
5
6
Standby Power Supply Current (mA)
■
4
3
2
1
0
-40 -20
0 20 40 60 80 100
Temp. TA (°C)
23
MB3769A
16-LEAD PLASTIC DUAL IN-LINE PACKAGE
(CASE No.: DIP-16P-M04)
15°MAX
+0.20
.770 +.008 (19.55
)
-0.30
-.012
INDEX-1
.244±.010
(6.20±0.25)
.300(7.62)
TYP
INDEX-2
.039 +.012
-0
(0.99 +0.30 )
-0
.060 +.012
-0
(1.52 +0.30 )
-0
.010±.002
(0.25±0.05)
.172(4.36)MAX
.118(3.00)MIN
.100(2.54)
TYP
.050(1.27)
MAX
1990 FUJITSU LIMITED D160335-2C-2
24
.018±.003
(0.46±0.08)
.020(0.51)MIN
Dimensions in
inches (millimeters)
MB3769A
16-LEAD PLASTIC FLAT PACKAGE
(CASE No.: FPT-16P-M06)
.089(2.25)MAX
(MOUNTING HEIGHT)
.002(0.05)MIN
(STAND OFF HEIGHT)
+.010
+0.25
(10.15
)
.400
-.008
-0.20
.307±.016
(7.80±0.40)
INDEX
“B”
.050(1.27)
TYP
.018±.004
(0.45±0.10)
“A”
.004(0.10)
.350(8.89) REF
.209±.012
(5.30±0.30)
∅.005(0.13)
+0.40
+.016
(6.80 -0.20 )
-.008
.020±.008
(0.50±0.20)
+.002 (0.15+0.05 )
.006
-0.02
-.001
M
Details of “A” part
Details of “B” part
.016(0.40)
.006(0.15)
.008(0.20)
.008(0.20)
.007(0.18)
MAX
.027(0.68)
MAX
1991 FUJITSU LIMITED F16015S-2C
.268
.007(0.18)
MAX
.027(0.68)
MAX
Dimensions in
inches (millimeters)
25
MB3769A
FUJITSU LIMITED
For further information please contact:
Japan
FUJITSU LIMITED
Corporate Global Business Support Division
Electronic Devices
KAWASAKI PLANT, 1015, Kamikodanaka
Nakahara-ku, Kawasaki-shi
Kanagawa 211, Japan
Tel: (044) 754-3753
Fax: (044) 754-3329
North and South America
FUJITSU MICROELECTRONICS, INC.
Semiconductor Division
3545 North First Street
San Jose, CA 95134-1804, U.S.A.
Tel: (408) 922-9000
Fax: (408) 432-9044/9045
Europe
FUJITSU MIKROELEKTRONIK GmbH
Am Siebenstein 6-10
63303 Dreieich-Buchschlag
Germany
Tel: (06103) 690-0
Fax: (06103) 690-122
Asia Pacific
FUJITSU MICROELECTRONICS ASIA PTE. LIMITED
No. 51 Bras Basah Road,
Plaza By The Park,
#06-04 to #06-07
Singapore 189554
Tel: 336-1600
Fax: 336-1609
All Rights Reserved.
Circuit diagrams utilizing Fujitsu products are included as a
means of illustrating typical semiconductor applications. Complete information sufficient for construction purposes is not necessarily given.
The information contained in this document has been carefully
checked and is believed to be reliable. However, Fujitsu assumes no responsibility for inaccuracies.
The information contained in this document does not convey any
license under the copyrights, patent rights or trademarks claimed
and owned by Fujitsu.
Fujitsu reserves the right to change products or specifications
without notice.
No part of this publication may be copied or reproduced in any
form or by any means, or transferred to any third party without
prior written consent of Fujitsu.
The information contained in this document are not intended for
use with equipments which require extremely high reliability
such as aerospace equipments, undersea repeaters, nuclear control systems or medical equipments for life support.
F9601
 FUJITSU LIMITED Printed in Japan