ETC MAX15039

19-4321; Rev 0; 10/08
ৰ‫ۇ‬
భᄋ৙ຶ
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‫ࢅތ‬᎖±2&ă
♦ ดᒙ37nΩ SET)PO*঱‫ܟ‬ਜ਼31nΩ SET)PO*ࢅ‫ܟ‬
NPTGFU
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றࣞ
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ჿࠣ࢟ྏ࿸ଐLjᄴဟጐᏤ኏‫ݧ‬፿ቃߛࡁᅪ‫ݝ‬Ꮔୈă
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ຢดࢅࡴᄰ࢟ᔜoNPTఎਈۣᑺᏴ୷ᒮঌᏲሆᄋ৙঱቉ൈLj
݀ဧ࢟ঢᒋᔢቃăሤ࣪᎖ॊೂᏄୈऱ‫ښ‬Ljক໭ୈࡼ࢟വ‫ݚ‬
௜ገ଼࡝ࡻࣶă଼࡝ࡼ࢟വ‫ݚ‬௜ਜ਼፛୭๼ᒙۣᑺ໭ୈᏴቤ
࿸ଐᒦࡼጙࠨᄰਭൈă
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ෝါ఼ᒜஉ৩ਜ਼ᇙ‫ތ‬हࡍ໭Ꮴ኏ဧ፿JJJಢ‫ޡݗ‬ऱ‫ښ‬Ljဧણ
വᔢࡍࡒ౑ࡉࡵఎਈຫൈࡼ31&ă୷౑ࡼણവࡒ౑ถ৫ۣ
ᑺ౐Ⴅၾზሰ።Lj࠭ऎିቃჅኊࡼၒ߲࢟ྏLjᏤ኏ཝჿࠣ
࢟ྏ࿸ଐă
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߲࢟ኹăᑚቋᎾ࿸ၒ߲࢟ኹᆐఱઓᄋ৙±2&ࡼၒ߲࢟ኹற
ࣞLjᇄኊဧ፿‫ڜ‬ਣࡼ1/2&றම࢟ᔜă഍ᅪLjభጲᄰਭೌ୻
Ᏼनౣ࣡ࡼೝৈᅪ‫࢟ݝ‬ᔜLj๼੝1/7Wด‫ݝ‬૥ᓰ૞SFGJOၒ
ྜྷ࣡ဗଝࡼᅪ‫ݝ‬૥ᓰLj୓ၒ߲࢟ኹ࿸ᒙࡵ፿ઓኊገࡼྀ
ੜၫᒋăNBY2614:ᄰਭᅪ‫ྟ߈ܠྏ࢟ݝ‬໪ࣅဟମLjጲି
࿩ၒྜྷ಍፻࢟ഗă
♦ 35፛୭Ă5nn! y! 5nnۡቯRGOᇄ໺ॖᓤ
``````````````````````````````````` ።፿
``````````````````````````` ࢜ቯ৔ᔫ࢟വ
ॲᇗ໭࢟Ꮞ
♦ ၒ߲࢟ኹᏴ1/7Wᒗ)1/:! y! WJO*ᒄମభࢯ
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♦ :ᒬభኡᐋᎾ࿸࢟ኹጲૺభࢯၒ߲࢟ኹ
1/7WĂ1/8WĂ1/9WĂ2/1WĂ2/3WĂ2/6WĂ2/9WĂ
3/1WĂ3/6W૞భࢯ
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♦ ധ૵ఎവ࢟Ꮞ௓ኙၒ߲
``````````````````````````````` ࢾ৪ቧᇦ
PART
MAX15039ETG+
TEMP RANGE
PIN-PACKAGE
-40°C to +85°C
24 Thin QFN-EP*
+‫ܭ‬ာᇄ໺0९੝SpIT‫ܪ‬ᓰࡼॖᓤă
*FQ! >! ൡ੆๤ă
INPUT
2.9V TO 5.5V
QPM
IN
BTJD0DQV0ETQਖ਼ᎧJ0P৙࢟
EN
BST
OUTPUT
1.8V, 6A
MAX15039
LX
EES࢟Ꮞ
VDD
OUT
૥ᐶ࢟Ꮞ
࢟ቧᎧᆀ൥࢟Ꮞ
CTL2
SBJE఼ᒜ࢟Ꮞ
CTL1
PGND
FB
FREQ
REFIN
SS
COMP
VDD
MODE
፛୭๼ᒙᏴၫ௣ᓾ೯ࡼᔢઁ৊߲ă
GND
PWRGD
________________________________________________________________ Maxim Integrated Products
1
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Ⴣན඾ॅዹອਜ਼ᔢቤ‫ࡼۈ‬ၫ௣ᓾ೯Lj༿षᆰNbyjnࡼᓍ጑ǖxxx/nbyjn.jd/dpn/doă
NBY2614:
``````````````````````````````````` গၤ
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ABSOLUTE MAXIMUM RATINGS
IN, PWRGD to GND..................................................-0.3V to +6V
VDD to GND ..................-0.3V to the lower of +4V or (VIN + 0.3V)
COMP, FB, MODE, REFIN, CTL1, CTL2, SS,
FREQ to GND ..........................................-0.3V to (VDD + 0.3V)
OUT, EN to GND ......................................................-0.3V to +6V
BST to LX..................................................................-0.3V to +6V
BST to GND ............................................................-0.3V to +12V
PGND to GND .......................................................-0.3V to +0.3V
LX to PGND ..................-0.3V to the lower of +6V or (VIN + 0.3V)
LX to PGND ..........-1V to the lower of +6V or (VIN + 1V) for 50ns
ILX(RMS) (Note 1) ......................................................................6A
VDD Output Short-Circuit Duration .............................Continuous
Converter Output Short-Circuit Duration ....................Continuous
Continuous Power Dissipation (TA = +70°C)
24-Pin TQFN (derate 27.8mW/°C above +70°C) ........2222mW
Thermal Resistance (Note 2)
θJA.................................................................................36°C/W
θJC ..................................................................................6°C/W
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Note 1: LX has internal clamp diodes to PGND and IN. Applications that forward bias these diodes should take care not to exceed
the IC’s package power dissipation limits.
Note 2: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a fourlayer board. For detailed information on package thermal considerations, refer to www.maxim-ic.com.cn/thermal-tutorial.
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(VIN = VEN = 5V, CVDD = 2.2μF, TA = TJ = -40°C to +85°C, typical values are at TA = +25°C, circuit of Figure 1, unless otherwise
noted.) (Note 3)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
5.5
V
IN
IN Voltage Range
IN Supply Current
Total Shutdown Current from IN
2.9
VIN = 3.3V
4.9
8
VIN = 5V
5.2
8.5
VIN = 5V, VEN = 0
10
20
VIN = VDD = 3.3V, VEN = 0
45
fS = 1MHz, no load
mA
μA
3.3V LDO (VDD)
VDD rising
VDD Undervoltage Lockout
Threshold
LX starts/stops switching
VDD falling
2.6
2.35
Minimum glitch-width
rejection
VDD Output Voltage
VIN = 5V, IVDD = 0 to 10mA
VDD Dropout
VIN = 2.9V, IVDD = 10mA
VDD Current Limit
VIN = 5V, VDD = 0
2.8
2.55
10
V
μs
3.1
3.3
3.5
25
40
mA
0.025
μA
20
ns
1
V
0.8
V
0.08
V
V
BST
BST Supply Current
VBST = VIN = 5V, VLX = 0 or 5V, VEN = 0
PWM COMPARATOR
PWM Comparator Propagation
Delay
PWM Peak-to-Peak Ramp
Amplitude
PWM Valley Amplitude
2
10mV overdrive
_______________________________________________________________________________________
7BĂ3NI{Ăଢ଼ኹቯࢯஂ໭Lj
ดᒙఎਈ
(VIN = VEN = 5V, CVDD = 2.2μF, TA = TJ = -40°C to +85°C, typical values are at TA = +25°C, circuit of Figure 1, unless otherwise
noted.) (Note 3)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
ERROR AMPLIFIER
COMP Clamp Voltage, High
VIN = 2.9V to 5V, VFB = 0.5V, VREFIN = 0.6V
2
COMP Clamp Voltage, Low
VIN = 2.9V to 5V, VFB = 0.7V, VREFIN = 0.6V
0.7
V
COMP Slew Rate
VFB step from 0.5V to 0.7V in 10ns
1.6
V/μs
COMP Shutdown Resistance
From COMP to GND, VIN = 3.3V, VCOMP = 100mV,
VEN = VSS = 0
6
Ω
Internally Preset Output Voltage
Accuracy
VREFIN = VSS, MODE = GND
FB Set-Point Value
CTL1 = CTL2 = GND, MODE = GND
FB to OUT Resistor
All VID settings except CTL1 = CTL2 = GND
-1
V
+1
%
0.594
0.6
0.606
V
5.5
8
10.5
kΩ
Open-Loop Voltage Gain
115
dB
Error-Amplifier Unity-Gain
Bandwidth
28
MHz
Error-Amplifier Common-Mode
Input Range
VDD = 2.9V to 3.5V
Error-Amplifier Maximum Output
Current
VCOMP = 1V,
VREFIN = 0.6V
FB Input Bias Current
CTL1 = CTL2 = GND
-125
VCTL_ = 0
-7.2
VCTL_ = VDD
7.2
0
VFB = 0.7V, sinking
1
VFB = 0.5V, sourcing
-1
VDD - 2
V
mA
nA
CTL_
CTL_ Input Bias Current
Low, falling
CTL_ Input Threshold
Hysteresis
μA
0.8
Float
VDD/2
High, rising
VDD 0.8
All VID transitions
V
50
mV
REFIN
REFIN Input Bias Current
VREFIN = 0.6V
REFIN Offset Voltage
VREFIN = 0.9V, FB shorted to COMP
-185
-4.5
nA
+4.5
mV
LX (All Pins Combined)
LX On-Resistance, High Side
ILX = -2A
LX On-Resistance, Low Side
ILX = 2A
VIN = VBST - VLX = 3.3V
35
VIN = VBST - VLX = 5V
26
VIN = 3.3V
25
VIN = 5V
20
High-side sourcing
LX Current-Limit Threshold
LX Leakage Current
9
35
mΩ
mΩ
11
Low-side sinking
11
Zero-crossing current threshold, MODE = VDD
0.2
VIN = 5V, VEN = 0
45
VLX = 0
-0.01
VLX = 5V
-0.01
A
μA
_______________________________________________________________________________________
3
NBY2614:
ELECTRICAL CHARACTERISTICS (continued)
NBY2614:
7BĂ3NI{Ăଢ଼ኹቯࢯஂ໭Lj
ดᒙఎਈ
ELECTRICAL CHARACTERISTICS (continued)
(VIN = VEN = 5V, CVDD = 2.2μF, TA = TJ = -40°C to +85°C, typical values are at TA = +25°C, circuit of Figure 1, unless otherwise
noted.) (Note 3)
PARAMETER
LX Switching Frequency
CONDITIONS
VIN = 2.9V to 5.5V
MIN
TYP
MAX
RFREQ = 49.9kΩ
0.9
1
1.1
RFREQ = 23.6kΩ
1.8
2
2.2
Switching Frequency Range
500
LX Minimum Off-Time
LX Maximum Duty Cycle
RFREQ = 49.9kΩ
LX Minimum Duty Cycle
RFREQ = 49.9kΩ
Average Short-Circuit IN Supply
Current
OUT connected to GND, VIN = 5V
RMS LX Output Current
92
MHz
2000
kHz
78
ns
15
%
95
5
UNITS
%
0.35
A
6
A
ENABLE
EN Input Logic-Low Threshold
EN falling
EN Input Logic-High Threshold
EN rising
EN Input Current
VEN = 0 or 5V, VIN = 5V
0.9
1.5
V
V
0.01
μA
MODE
MODE Input-Logic Threshold
MODE Input-Logic Hysteresis
MODE Input Bias Current
Logic-low, falling
26
Logic VDD/2 or floating, rising
50
Logic-high, rising
74
MODE falling
5
MODE = GND
-5
MODE = VDD
5
%VDD
%VDD
μA
SS
SS Current
VSS = 0.45V, VREFIN = 0.6V, sourcing
6.7
8
9.3
μA
THERMAL SHUTDOWN
Thermal-Shutdown Threshold
Rising
Thermal-Shutdown Hysteresis
165
°C
25
°C
POWER GOOD (PWRGD)
Power-Good Threshold Voltage
VFB falling, VREFIN = 0.6V
VFB rising, VREFIN = 0.6V
88
90
92
92.5
%
VREFIN
Clock
Cycles
Power-Good Edge Deglitch
VFB rising or falling
48
PWRGD Output-Voltage Low
IPWRGD = 4mA
0.03
PWRGD Leakage Current
VIN = VPWRGD = 5V, VFB = 0.7V, VREFIN = 0.6V
0.01
μA
Current-Limit Startup Blanking
112
Clock
Cycles
Autoretry Restart Time
896
Clock
Cycles
0.1
V
HICCUP OVERCURRENT LIMIT
4
_______________________________________________________________________________________
7BĂ3NI{Ăଢ଼ኹቯࢯஂ໭Lj
ดᒙఎਈ
(VIN = VEN = 5V, CVDD = 2.2μF, TA = TJ = -40°C to +85°C, typical values are at TA = +25°C, circuit of Figure 1, unless otherwise
noted.) (Note 3)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
FB Hiccup Threshold
VFB falling
70
%
VREFIN
Hiccup Threshold Blanking Time
VFB falling
28
μs
Note 3: Specifications are 100% production tested at TA = +25°C. Limits over the operating temperature range are guaranteed by design.
````````````````````````````````````````````````````````````````````````࢜ቯ৔ᔫᄂቶ
(Typical values are VIN = VEN = 5V, VOUT = 1.8V, RFREQ = 49.9kΩ, IOUT = 6A, TA = +25°C, circuit of Figure 1, unless otherwise noted.)
EFFICIENCY
vs. OUTPUT CURRENT
90
2.20
MAX15039 toc02
100
MAX15039 toc01
100
FREQUENCY
vs. INPUT VOLTAGE
90
MAX15039 toc03
EFFICIENCY
vs. OUTPUT CURRENT
2.15
70
VOUT = 1.8V
60
VOUT = 2.5V
VOUT = 1.8V
70
60
VOUT = 1.2V
VOUT = 1.2V
2.05
2.00
1.95
TA = +85°C
1.90
50
50
40
40
TA = +25°C
TA = -40°C
1.85
VIN = 3.3V
1.0
10.0
1.0
0.1
OUTPUT CURRENT (A)
FREQUENCY
vs. INPUT VOLTAGE
FREQUENCY (MHz)
1.05
1.00
TA = +85°C
TA = +25°C
TA = -40°C
-0.05
-0.10
-0.15
-0.20
-0.25
VOUT = 1.2V
-0.30
VOUT = 1.8V
-0.35
VOUT = 2.5V
-0.40
-0.50
3.0
3.5
4.0
4.5
INPUT VOLTAGE (V)
5.0
4.0
4.5
5.0
5.5
0
-0.02
VOUT = 1.8V
-0.04
-0.06
-0.08
VOUT = 1.2V
-0.10
-0.45
RFREQ = 49.9kΩ
0.80
2.5
3.5
LINE REGULATION (LOAD = 6A)
MAX15039 toc05a
1.10
0.85
3.0
INPUT VOLTAGE (V)
0
OUTPUT-VOLTAGE CHANGE (%)
MAX15039 toc04
1.15
0.90
2.5
LOAD REGULATION
1.20
0.95
10.0
OUTPUT CURRENT (A)
OUTPUT-VOLTAGE CHANGE (%)
0.1
RFREQ = 23.2kΩ
1.80
MAX15039 toc05b
VOUT = 2.5V
80
FREQUENCY (MHz)
EFFICIENCY (%)
EFFICIENCY (%)
2.10
80
5.5
-0.12
0
1
2
3
4
LOAD CURRENT (A)
5
6
7
2.5
3.0
3.5
4.0
4.5
5.0
5.5
INPUT VOLTAGE (V)
_______________________________________________________________________________________
5
NBY2614:
ELECTRICAL CHARACTERISTICS (continued)
```````````````````````````````````````````````````````````````````````࢜ቯ৔ᔫᄂቶ)ኚ*
(Typical values are VIN = VEN = 5V, VOUT = 1.8V, RFREQ = 49.9kΩ, IOUT = 6A, TA = +25°C, circuit of Figure 1, unless otherwise noted.)
SWITCHING WAVEFORMS
(SKIP MODE, NO LOAD)
SWITCHING WAVEFORMS
(FORCED PWM, 2A LOAD)
LOAD TRANSIENT
MAX15039 toc08
MAX15039 toc07
MAX15039 toc06
AC-COUPLED
100mV/div
VOUT
AC-COUPLED
50mV/div
VOUT
AC-COUPLED VOUT
100mV/div
1A/div
ILX
2A/div
ILX
2A
0A
0A
5V/div
IOUT
VLX
5V/div
VLX
0A
0V
2μs/div
400ns/div
40μs/div
SOFT-START WAVEFORM
(RLOAD = 0.5Ω)
SHUTDOWN WAVEFORM
(RLOAD = 0.5Ω)
MAX15039 toc09
MAX15039 toc10
VEN
5V/div
VEN
5V/div
VOUT
1V/div
VOUT
1V/div
0V
0V
400μs/div
10μs/div
INPUT SHUTDOWN CURRENT
vs. INPUT VOLTAGE
MAXIMUM OUTPUT CURRENT
vs. OUTPUT VOLTAGE
10
9
8
7
6
MAX15039 toc12
11
10
MAXIMUM OUTPUT CURRENT (A)
MAX15039 toc11
12
INPUT SHUTDOWN CURRENT (μA)
NBY2614:
7BĂ3NI{Ăଢ଼ኹቯࢯஂ໭Lj
ดᒙఎਈ
9
8
7
6
5
4
3
VEN = 0V
5
2
2.5
3.0
3.5
4.0
4.5
INPUT VOLTAGE (V)
6
5.0
5.5
0.5
1.0
1.5
2.0
OUTPUT VOLTAGE (V)
_______________________________________________________________________________________
2.5
7BĂ3NI{Ăଢ଼ኹቯࢯஂ໭Lj
ดᒙఎਈ
0.7
IOUT
RMS INPUT CURRENT (A)
0V
5A/div
0A
1A/div
IIN
0.6
0.5
0.4
0.3
0.2
0A
0.1
6A LOAD
90
80
70
60
50
40
30
20
10
VOUT = 0V
MEASURED ON A MAX15039EVKIT
0
0
2.5
400μs/div
100
3.0
3.5
4.0
4.5
5.0
5.5
0
20
40
60
80
100
AMBIENT TEMPERATURE (°C)
INPUT VOLTAGE (V)
FEEDBACK VOLTAGE
vs. TEMPERATURE
SOFT-START WITH REFIN
MAX15039 toc17
MAX15039 toc16
0.64
0.63
FEEDBACK VOLTAGE (V)
MAX15039 toc15
1V/div
MAX15039 toc14
0.8
EXPOSED PAD TEMPERATURE (°C)
MAX15039 toc13
VOUT
EXPOSED PAD TEMPERATURE
vs. AMBIENT TEMPERATURE
RMS INPUT CURRENT DURING
SHORT CIRCUIT vs. INPUT VOLTAGE
HICCUP CURRENT LIMIT
1A/div
IIN
0.62
0A
0.61
0.5V/div
VREFIN
0.60
0V
0.59
1V/div
VOUT
0V
0.58
VPWRGD
0.57
2V/div
0V
0.56
-40
-15
10
35
60
85
200μs/div
TEMPERATURE (°C)
STARTING INTO PREBIASED OUTPUT
(MODE = VDD/2, VOUT = 2.5V, 2A LOAD)
STARTING INTO PREBIASED OUTPUT
(MODE = VDD, VOUT = 2.5V, 2A LOAD)
MAX15039 toc19
MAX15039 toc18
5V/div
VEN
0V
5V/div
VEN
0V
1V/div
1V/div
VOUT
VOUT
0V
0V
2A
2A
IOUT
IOUT
0A
0A
5V/div
VPWRGD
5V/div
VPWRGD
0V
0V
200μs/div
200μs/div
_______________________________________________________________________________________
7
NBY2614:
```````````````````````````````````````````````````````````````````````࢜ቯ৔ᔫᄂቶ)ኚ*
(Typical values are VIN = VEN = 5V, VOUT = 1.8V, RFREQ = 49.9kΩ, IOUT = 6A, TA = +25°C, circuit of Figure 1, unless otherwise noted.)
NBY2614:
7BĂ3NI{Ăଢ଼ኹቯࢯஂ໭Lj
ดᒙఎਈ
```````````````````````````````````````````````````````````````````````࢜ቯ৔ᔫᄂቶ)ኚ*
(Typical values are VIN = VEN = 5V, VOUT = 1.8V, RFREQ = 49.9kΩ, IOUT = 6A, TA = +25°C, circuit of Figure 1, unless otherwise noted.)
STARTING INTO PREBIASED OUTPUT
(MODE = VDD/2, VOUT = 2.5V, NO LOAD)
STARTING INTO PREBIASED OUTPUT
(MODE = VDD, VOUT = 2.5V, NO LOAD)
MAX15039 toc21
MAX15039 toc20
VEN
2V/div
VEN
2V/div
0V
0V
VOUT
1V/div
VOUT
1V/div
0V
0V
VPWRGD
2V/div
VPWRGD
2V/div
0V
0V
200μs/div
200μs/div
STARTING INTO PREBIASED OUTPUT
ABOVE NOMINAL SET POINT (VOUT = 1.5V)
STARTING INTO PREBIASED ABOVE
NOMINAL SET POINT (VOUT = 1.5V)
MAX15039 toc22
MAX15039 toc23
VEN
2V/div
VEN
2V/div
0V
0V
VOUT
1V/div
VOUT
1V/div
0V
0V
VPWRGD
2V/div
VMODE = VDD,
NO LOAD
VOUT = 1.5V,
VMODE = VDD/2,
NO LOAD
0V
1ms/div
TRANSITION FROM FORCED PWM
TO SKIP MODE
MAX15039 toc24
MAX15039 toc25
VMODE
5V/div
VMODE
5V/div
VLX
5V/div
VLX
5V/div
VOUT
0.5V/div
VOUT
0.5V/div
NO LOAD
NO LOAD
0V
8
0V
1ms/div
TRANSITION FROM SKIP MODE
TO FORCED PWM MODE
2ms/div
VPWRGD
2V/div
4ms/div
_______________________________________________________________________________________
0V
7BĂ3NI{Ăଢ଼ኹቯࢯஂ໭Lj
ดᒙఎਈ
፛୭
෗߂
৖ถ
৖ถෝါኡᐋၒྜྷăৎࣶቧᇦLj‫ݬ‬୅ෝါኡᐋ‫ݝ‬ॊă
1
MODE
2
VDD
4/4W! MEPၒ߲ăด‫ݝ‬ෝผਖ਼࢟ኹࡼ࢟ᏎၒྜྷăᏴWEE ᒗHOEᒄମೌ୻ጙৈᒗ࿩3/3μGࡼࢅFTSჿࠣ࢟ྏă
3
CTL1
4
CTL2
Ꮎ࿸ၒ߲࢟ኹኡᐋၒྜྷăDUM2ਜ਼DUM3ኡᐋ:ᒬ‫ݙ‬ᄴࡼᎾ࿸ၒ߲࢟ኹăᎾ࿸ၒ߲࢟ኹభ‫ݬ‬୅‫ܭ‬2ਜ਼࿸ᒙၒ߲࢟ኹ
)DUM2ĂDUM3*‫ݝ‬ॊă
5
REFIN
ᅪ‫ݝ‬૥ᓰၒྜྷăೌ୻SFGJOᒗTTဟLjဧ፿ด‫ݝ‬1/7W૥ᓰăೌ୻SFGJOᒗᅪ‫ݝ‬૥ᓰ࢟ኹLjࢯஂGCᆮࢾᏴSFGJO
࢟ኹăJDࠀ᎖ਈࣥ0ࡌᡅෝါဟLjSFGJOด‫ݝ‬౯ᒗHOEă
6
SS
7
GND
8
COMP
9
FB
10
OUT
ၒ߲࢟ኹଶ‫ހ‬Ljೌ୻ᒗၒ߲ăဧ፿ᅪ‫࢟ݝ‬ᔜॊኹ໭ဟLj୓PVUኞహă
11
FREQ
ᑩ࡬໭ຫൈኡᐋăᏴGSFRਜ਼HOEᒄମೌ୻ጙৈ࢟ᔜLj፿᎖ኡᐋఎਈຫൈă‫ݬ‬୅ຫൈኡᐋ)GSFR*‫ݝ‬ॊă
12
PWRGD
13
BST
14, 15,
16
LX
17–20
PGND
21, 22,
23
IN
࢟Ꮞၒྜྷăၒྜྷ࢟Ꮞपᆍᆐ3/:Wᒗ6/6Wă‫ݧ‬፿ጙৈ33μGჿࠣ࢟ྏ୓JO๬വᒗQHOEă
24
EN
ဧถၒྜྷLjক൝૷ၒྜྷ፿᎖ဧถ0ணᒏNBY2614:ă
—
EP
ൡ੆๤ă୓FQೌ୻ᒗᎧQHOEሤೌࡼࡍෂ૩୻࢐‫ށ‬Ljጲখ࿖ྲེă‫ݙ‬ถ୓FQᔫᆐ໭ୈࡼᆎጙ୻࢐ೌ୻࢛ă
ྟ໪ࣅၒྜྷăᏴTTਜ਼HOEᒄମೌ୻ጙৈ࢟ྏLjጲ࿸ᒙ໪ࣅဟମăক࢟ྏᔢቃནᒋ2oGăᎌਈ࿸ᒙྟ໪ࣅဟମࡼ
ሮᇼቧᇦLj༿‫ݬ‬ఠྟ໪ࣅਜ਼SFGJO ‫ݝ‬ॊă
ෝผ࢐ೌ୻ăᏴణதၒྜྷ๬വ࢟ྏऩૄ࣡ࠀ୓HOEਜ਼QHOE࡝࢛ೌ୻໦౶ă
࢟ኹᇙ‫ތ‬हࡍ໭ࡼၒ߲ăᏴDPNQᒗGCਜ਼PVUᒄମೌ୻‫ܘ‬ገࡼ‫ޡݗ‬ᆀ൥ăJDࠀ᎖ਈࣥ0ࡌᡅෝါဟLjDPNQด‫ݝ‬
౯ᒗHOEă
नౣၒྜྷă୓GCೌ୻ᒗၒ߲ਜ਼HOEᒄମᅪ‫࢟ݝ‬ᔜॊኹ໭ࡼᒦቦߥᄿLjၒ߲࢟ኹభ࿸ᒙࡵ1/7Wᒗ):1&! y! WJO*
पᆍดă፿DUM2ਜ਼DUM3ኡᐋ:ᒬ‫ݙ‬ᄴࡼᎾ࿸ၒ߲࢟ኹဟLjᏴGCᒗၒ߲ᒄମೌ୻SDᆀ൥ă
ധ૵ఎവĂ࢟Ꮞ௓ኙၒ߲ăࡩWGC ࿟ဍᒗި߲WSFGJO ࡼ:3/6&! )࢜ቯᒋ*݀༦WSFGJO ࡍ᎖1/65WဟLjQXSHEᆐ঱
ᔜზăࡩWGCࢰൢᒗࢅ᎖WSFGJO ࡼ:1&! )࢜ቯᒋ*૞WSFGJO ቃ᎖1/65WဟLjQXSHEด‫ݝ‬౯ᒗࢅ࢟ຳăJDࠀ᎖ਈࣥ
ෝါĂWEE ࢅ᎖ด‫ݝ‬VWMPඡሢ૞ᑗJDࠀ᎖ེਈࣥෝါဟLjQXSHE‫ۻ‬ด‫ݝ‬౯ࢅă
঱‫ܟ‬NPTGFUདࣅ໭࢟ᏎăᄰਭጙৈqNPTఎਈด‫୻ೌݝ‬ᒗJOă‫ݧ‬፿ጙৈ1/2μG࢟ྏ๬വCTUᒗMYă
࢟ঢೌ୻LjჅᎌMY፛୭௿Ᏼด‫୻ೌݝ‬Ᏼጙ໦ăೌ୻ჅᎌMY፛୭ᒗၒ߲࢟ঢࡼఎਈ‫ݾ‬ăJDࠀ᎖ਈࣥෝါဟLjMY
ᆐ঱ᔜზă
৖ൈ࢐Lj࠭ᅪ‫୻ೌݝ‬ჅᎌQHOE፛୭ᒗ৖ൈ࢐ຳෂăᏴణதJDᆡᒙࠀ୓ჅᎌQHOE፛୭ೌ୻Ᏼጙ໦ă
_______________________________________________________________________________________
9
NBY2614:
``````````````````````````````````````````````````````````````````````````` ፛୭ႁී
NBY2614:
7BĂ3NI{Ăଢ଼ኹቯࢯஂ໭Lj
ดᒙఎਈ
`````````````````````````````````````````````````````````````````````````````` ऱౖᅄ
VDD
MAX15039
3.3V LDO
UVLO
CIRCUITRY
SHUTDOWN
CONTROL
EN
BST
CURRENT-LIMIT
COMPARATOR
BST SWITCH
IN
BIAS
GENERATOR
VOLTAGE
REFERENCE
THERMAL
SHUTDOWN
CONTROL
LOGIC
LX
IN
SS
SOFT-START
PGND
CURRENT-LIMIT
COMPARATOR
REFIN
OUT
ERROR
AMPLIFIER
8kΩ
PWM
COMPARATOR
MODE
FB
CTL1
CTL2
VID
VOLTAGECONTROL
CIRCUITRY
FREQ
1VP-P
OSCILLATOR
COMP
PWRGD
SHDN
FB
COMP CLAMPS
0.9 x VREFIN
10
______________________________________________________________________________________
GND
7BĂ3NI{Ăଢ଼ኹቯࢯஂ໭Lj
ดᒙఎਈ
OPTIONAL
IN
C6
22μF
NBY2614:
2.2Ω
INPUT
2.9V TO 5.5V
C7
0.1μF
BST
C15
1000pF
C10
0.1μF
L1
0.47μH
MAX15039
OUTPUT
1.8V, 6A
LX
VDD
C5
2.2μF
OUT
C8
22μF
C3
560pF
CTL2
C9
0.01μF
R3
158Ω
CTL1
PGND
EN
FB
FREQ
C2
1500pF
R2
2.67kΩ
REFIN
R4
49.9kΩ
SS
C1
33pF
C4
0.022μF
COMP
MODE
GND
VDD
R1
20kΩ
PWRGD
ᅄ2/! ࢜ቯ።፿࢟വǖ2NI{ĂWJO >! 3/:Wᒗ6/6WĂWPVU >! 2/9Wဟࡼཝჿࠣ࢟ྏ࿸ଐ
``````````````````````````````` ሮᇼႁී
NBY2614:ᆐ঱቉ൈĂ࢟ኹෝါఎਈࢯஂ໭Lj௥ᎌ7Bࡼၒ
߲࢟ഗถೆăNBY2614:৔ᔫᏴ3/:Wᒗ6/6Wၒྜྷ࢟Ꮞपᆍ
ดLjభጲᄋ৙1/7Wᒗ1/: y WJO ࡼၒ߲࢟ኹLjऻ‫ޟ‬း੝ঌᏲ
࢛።፿ăᏴᑳৈঌᏲĂၒྜྷ࢟ኹਜ਼ᆨࣞ‫ܤ‬છपᆍดLj໭ୈ
ၒ߲࢟ኹறࣞᎁ᎖±2&ă
NBY2614:௥ᎌ୷౑ࡼఎਈຫൈपᆍLjభጲဣሚཝჿࠣ࢟
ྏ࿸ଐጲૺ౐Ⴅၾზሰ።)‫ݬ‬୅ᅄ2*ă঱ఎਈຫൈᏤ኏‫ݧ‬፿
ቃߛࡁᅪ‫ݝ‬ᏄୈăNBY2614:‫ݧ‬፿ቃቯ)5nn y 5nn*Ăᇄ
໺Ă35፛୭ۡቯRGOॖᓤăSFGJOဧNBY2614:భಯሯ፿
᎖EESਜ਼ৌᔍ࢟Ꮞă঱‫ܟ‬ਜ਼ࢅ‫ܟ‬ఎਈ‫ݧ‬፿ด‫ࢅݝ‬SET)PO*
)ࢅ‫ܟ‬o৥ࡸNPTGFU 31nΩǗ঱‫ܟ‬o৥ࡸNPTGFU! 37nΩ*ࡼ
NPTGFULjభጲᏴᒮᏲਜ਼঱ఎਈຫൈሆۣߒ঱቉ൈă
NBY2614:‫ݧ‬፿࢟ኹෝါ఼ᒜஉ৩Ljࡒᎌ౑ࡒ)39NI{*ᇙ
‫ތ‬हࡍ໭ă࢟ኹෝါ఼ᒜஉ৩Ꮴ኏঱ࡉ3NI{ࡼఎਈຫൈLj
ିቃ೫࢟വ‫ۇ‬ෂ૩ă࢟ኹᇙ‫ތ‬ᏥႯहࡍ໭‫ݧ‬፿JJJቯ‫ޡݗ‬ऱ
‫ښ‬Ljߠॊಽ፿঱ఎਈຫൈࡼࡒ౑Ljጲ૝ࡻ౐Ⴅၾზሰ።ă
భࢯஂࡼྟ໪ࣅဟମభጲഉ૚࿸ᒙLjିቃ೫ၒྜྷ໪ࣅ಍፻
࢟ഗăࡩWGC ࡉࡵWSFGJO ࡼ:3/6&݀༦WSFGJO ࡍ᎖1/65WဟLj
࢟Ꮞ௓ኙ)QXSHE*ఎധၒ߲‫ܤ‬ᆐ঱࢟ຳă
NBY2614:ᎌ4ᒬ৔ᔫෝါభ৙ኡᐋǖ‫ܪ‬ᓰQXNෝါĂ࠭
Ꮎມᒙၒ߲࡝ࢯ໪ࣅࡼQXNෝါ૞࠭Ꮎມᒙၒ߲࡝ࢯ໪
ࣅࡼᄢ൴ߡෝါă
______________________________________________________________________________________
11
NBY2614:
7BĂ3NI{Ăଢ଼ኹቯࢯஂ໭Lj
ดᒙఎਈ
఼ᒜ໭৖ถ
఼ᒜ໭൝૷࢟വᆐᒦያࠀಯ໭Lj፿౶௼ࢾ‫ݙ‬ᄴၒྜྷ࢟ኹĂ
ঌᏲਜ਼ᆨࣞᄟୈሆ঱‫ܟ‬NPTGFUࡼᐴహ‫܈‬ăᑵ‫ޟ‬৔ᔫෝါ
ሆLj࢟ഗሢᒜਜ਼ᆨۣࣞઐᆚ߿खLj఼ᒜ໭൝૷࢟വ୻၃
QXN‫୷܈‬໭ࡼၒ߲Lj‫ޘ‬ည঱‫ܟ‬ਜ਼ࢅ‫ܟ‬NPTGFUࡼདࣅቧ
੓ăሌࣥઁ੝൝૷ਜ਼ᔈ௟࢟ྏߠ࢟ࡼဟኔ၊఼᎖఼ᒜ໭
൝૷࢟വă࢟ኹᇙ‫ތ‬हࡍ໭‫ޘ‬ညࡼᇙ‫ތ‬ቧ੓Ꭷᑩ࡬໭‫ޘ‬
ညࡼቓຸቧ੓ᄰਭQXN‫୷܈‬໭஠ቲ‫୷܈‬Ljᎅࠥ‫ޘ‬ညჅኊ
ࡼQXNቧ੓ă঱‫ܟ‬ఎਈᏴᑩ࡬໭ᒲ໐ࡼఎဪ୿ࣤࡴᄰLj
ࡩቓຸ࢟ኹިਭW DPNQ ቧ੓࢟ኹ૞ᑗި߲ሢഗඡሢဟਈ
ࣥăႲઁLjᏴᑩ࡬໭ࡼထ᎜ᒲ໐ดLjࢅ‫ܟ‬ఎਈۣߒࡴᄰă
໚ᒦLjuTT ᆐჅኊࡼྟ໪ࣅဟମLj࡝ᆡᆐ෇ăNBY2614:થ
భጲᅪ୻૥ᓰၒྜྷ)SFGJO*ăJDᄰਭࢯஂGCLjဧ໚ᆮࢾᏴ
SFGJO࢟ኹ࿟ă‫ݧ‬፿ᅪ‫ݝ‬૥ᓰဟLjด‫ྟݝ‬໪ࣅᇄ቉ăᅄ3
Ⴥာᆐ‫ݧ‬፿ᅪ‫ݝ‬૥ᓰဟLjဣሚྟ໪ࣅࡼऱजăೌ୻SFGJO
ᒗTTLjጲဧ፿ด‫ݝ‬1/7W૥ᓰăTT࿟࢟ྏᔢቃནᒋ2oGă
་ኹჄࢾ)VWMP*
ྦWEE ଢ଼ࢅᒗ3/66W )࢜ቯᒋ*ጲሆဟLjVWMP࢟വ୓ணᒏఎ
ਈࣅᔫăጙࡡWEE ࿟ဍᒗ3/7W )࢜ቯᒋ*ጲ࿟LjVWMP୓ஊ
߹LjᏳࠨఎဪྟ໪ࣅਭ߈ăดᒙ61nWᒣૄLj፿᎖ጴᒜ൴
ߡছཷă
CTU
࢟ഗሢᒜ
ด‫ݝ‬঱‫ܟ‬NPTGFU௥ᎌ22B )࢜ቯᒋ*ख़ᒋ࢟ഗඡሢăࡩ࠭
MYഗ߲ࡼ࢟ഗި߲ࠥඡሢဟLj঱‫ܟ‬NPTGFUਈ‫ܕ‬Ljᄴဟ
ࡌఎᄴ‫ݛ‬ᑳഗ໭ăᄴ‫ݛ‬ᑳഗ໭ጙᒇۣߒఎ໪ᓨზLjᒇࡵ
࢟ঢ࢟ഗࢅ᎖ࢅ‫ܟ‬ఎਈሢഗඡሢăᑚዹ୓ଢ଼ࢅᐴహ‫݀܈‬
ଢ଼ࢅၒ߲࢟ኹLjᒇᒗ‫ݙ‬Ᏻި߲࢟ഗඡሢăNBY2614:‫ݧ‬፿
ࡌᡅෝါLj‫ܜ‬඾ၒ߲࣢വဟበຢਭེă
ሢഗ໐ମLjྙਫWGC ࢅ᎖WSFGJO y 81&݀༦ࢅ᎖ক࢟ຳࡼ
ဟମިਭ23μtဟLjNBY2614:஠ྜྷࡌᡅෝါă঱‫ܟ‬NPTGFU
ਜ਼ᄴ‫ݛ‬ᑳഗ໭‫ۻ‬ਈࣥLjᄴဟDPNQਜ਼SFGJO‫ۻ‬ด‫ݝ‬౯ࢅă
ྙਫSFGJOਜ਼TTೌ୻Ᏼጙ໦Ljกඐᑚೝৈ፛୭௿‫ۻ‬౯ࢅă
໭ୈۣߒকᓨზ9:7ৈဟᒩᒲ໐LjႲઁᏴ223ৈဟᒩᒲ໐
ด‫ޞ‬၂ᒮ໪ăྙਫࡴᒘሢഗࡼ৺ᑇ‫߹༹ۻ‬Lj໭ୈૂআᑵ
‫ޟ‬৔ᔫෝါă॥ᐌLj໭ୈᏳࠨ஠ྜྷࡌᡅෝါă
ྟ໪ࣅਜ਼SFGJO
NBY2614:ಽ፿భ‫ྟࡼ߈ܠ‬໪ࣅ৖ถ౶ሢᒜ໪ࣅਭ߈ᒦࡼ
಍፻࢟ഗă9μB )࢜ቯᒋ*࢟ഗᏎ࣪ೌ୻ᏴTTࡼᅪ‫ྏ࢟ݝ‬஠
ቲߠ࢟ăྟ໪ࣅဟମᎅೌ୻ᏴTTᒗHOEᒄମࡼᅪ‫ྏ࢟ݝ‬
ࢯஂăჅኊ࢟ྏᎅሆါ௼ࢾǖ
C=
8μA × t SS
0.6V
঱‫ܟ‬Ăo৥ࡸఎਈࡼᐜ૵དࣅ࢟ኹᎅऽ࢟ྏဍኹ࢟വ‫ޘ‬ညă
ࡩࢅ‫ܟ‬NPTGFUࡴᄰဟLjೌ୻ᏴCTU፛୭ਜ਼MY፛୭ᒄମ
ࡼᑚৈ࢟ྏᎅWJO ࢟Ꮞߠ࢟ăࡩࢅ‫ܟ‬NPTGFUਈࣥLj୓ऽ
࢟ྏ࿟ࡼ࢟ኹࢶଝࡵMY࣡࢟ኹLjᆐด‫ݝ‬঱‫ܟ‬NPTGFUᄋ
৙‫ܘ‬ኊࡼࡴᄰ࢟ኹă
ຫൈኡᐋ)GSFR*
ఎਈຫൈభᎅጙৈ࢟ᔜᏴ611lI{ᒗ3NI{पᆍด஠ቲ‫߈ܠ‬
࿸ࢾăಽ፿ೌ୻ᏴGSFRਜ਼HOEᒄମࡼ࢟ᔜ)SGSFR*౶࿸ᒙ
JDࡼఎਈຫൈăSGSFR ଐႯऱါྙሆǖ
RFREQ =
50kΩ
1
×(
0.95μs fS
− 0.05μs)
໚ᒦLjgT ᆐჅ໐ᆃࡼఎਈຫൈLj࡝ᆡᆐ੣ᓼă
R1
REFIN
R2
C
MAX15039
ᅄ3/! ‫ݧ‬፿ᅪ‫ݝ‬૥ᓰဟLj࢜ቯࡼྟ໪ࣅဣሚऱज
12
______________________________________________________________________________________
7BĂ3NI{Ăଢ଼ኹቯࢯஂ໭Lj
ดᒙఎਈ
QXSHEᆐఎധၒ߲LjWGC ި߲WSFGJO ࡼ:3/6&݀༦WSFGJO
ࡍ᎖1/65W༦ߒኚᒗ࿩59ৈဟᒩᒲ໐ဟ‫ܤ‬ᆐ঱ᔜზăW GC
ࢅ᎖WSFGJO ࡼ:1&݀༦WSFGJO ቃ᎖1/65Wဟ݀༦ߒኚᒗ࿩
59ৈဟᒩᒲ໐ဟLjQXSHE౯ᒗࢅ࢟ຳăࡩJDࠀ᎖ਈࣥෝ
ါĂW EE ࢅ᎖ด‫ݝ‬VWMPඡሢ૞ᑗJDࠀ᎖ེਈࣥෝါဟLj
QXSHE‫ۻ‬ด‫ݝ‬౯ࢅă
࿸ᒙၒ߲࢟ኹ)DUM2ĂDUM3*
ྙ‫ܭ‬2ჅာLjၒ߲࢟ኹဵᎅDUM2ਜ਼DUM3ࡼ൝૷ᓨზ፛୭‫ܠ‬
߈࿸ࢾࡼăDUM2ਜ਼DUM3ᆐྯზ࢟ຳၒྜྷǖWEEĂኞహਜ਼
HOEăࡩDUM2ਜ਼DUM3ೌ୻ᒗHOEဟLj‫ܘ‬ኍᏴPVUਜ਼GCᒄ
ମೌ୻ጙৈ9/17lΩ࢟ᔜăDUM2ਜ਼DUM3ࡼ൝૷ᓨზ‫ܘ‬ኍᏴ
࿟࢟ᒄ༄ᅲ߅‫߈ܠ‬࿸ࢾăጙࡡ໭ୈ‫ۻ‬ဧถLj‫ݙ‬ถখ‫ܤ‬DUM2
ਜ਼DUM3ăྙਫኊገ࣪ၒ߲࢟ኹ஠ቲᒮቤ‫߈ܠ‬Ljኊገᒮቤ
໪ࣅ࢟Ꮞ૞FOLj݀ᏴᏳࠨဧถ༄ᅲ߅ᒮቤ‫߈ܠ‬ăᄰਭᏴ
WPVUĂGCਜ਼HOEᒄମဧ፿࢟ᔜॊኹ໭ᆀ൥LjభᏴ1/7Wᒗ
W JO ࡼ:1&ᒄମೌኚ࿸ᒙၒ߲࢟ኹLj‫ݬ‬୅ᅄ4băDUM2ਜ਼
DUM3‫ܘ‬ኍೌ୻ᒗHOEă
‫ܭ‬2/! DUM2ਜ਼DUM3ၒ߲࢟ኹኡᐋ
CTL1
CTL2
VOUT (V)
GND
GND
0.6
0.7
VDD
VDD
GND
Unconnected
0.8
GND
VDD
1.0
Unconnected
GND
1.2
Unconnected
Unconnected
1.5
Unconnected
VDD
1.8
VDD
GND
2.0
VDD
Unconnected
2.5
L
COUT
MAX15039
R3
OUT
R2
C3
FB
CTL1
C1
R1
CTL2
COMP
དࣅFOᒗHOELjጲਈࣥJDLjࠥဟஸზ࢟ഗ୓ଢ଼ᒗ21μB
)࢜ቯᒋ*ጲሆăਈࣥ໐ମLjMYᆐ঱ᔜზăདࣅFOᒗ঱࢟ຳLj
ဧถNBY2614:ă
R4
C2
a) EXTERNAL RESISTIVE DIVIDER
ེۣઐ
L
ེਭᏲۣઐ৖ถሢᒜ໭ୈࡼᔐ৖੒ăࡩஉᆨUK ިਭ,276°D
ဟLjᆨࣞࠅঢ໭༓ᒜ໭ୈ஠ྜྷਈࣥᓨზLjጲଢ଼ࢅ਌በᆨࣞă
ࡩஉᆨሆଢ଼31°DጲઁLjᆨࣞࠅঢ໭୓Ᏻࠨ໪ࣅ໭ୈLjᏴೌ
ኚਭᏲᄟୈሆ‫ޘ‬ညମቌၒ߲ăེਈࣥਭ߈உၦઁLj୓ᒮቤ
ఎဪྟ໪ࣅਭ߈ă
VOUT
LX
COUT
MAX15039
R2
OUT
R3
8kΩ
``````````````````````````````` ።፿ቧᇦ
ᆐି࿩ᎅ᎖঱ఎਈຫൈࡴᒘࡼᐅဉLj݀ဧNBY2614:ၒ߲
றࣞᔢࡍછLjᏴJOਜ਼QHOEᒄମೌ୻ጙৈ33μGࡼ࢟ྏ࣪
JO஠ቲབྷẮăᄴဟLjᏴWEE ਜ਼HOEᒄମೌ୻ጙৈ3/3μGࡼ
ࢅFTSჿࠣ࢟ྏ࣪WEE ஠ቲབྷẮă୓ᑚቋ࢟ྏ஧భถణத
JDहᒙă
VOUT
LX
ਈࣥෝါ
JOਜ਼WEE བྷẮ
NBY2614:
࢟Ꮞ௓ኙၒ߲)QXSHE*
C3
FB
VOLTAGE
SELECT
CTL1
CTL2
R1
C1
COMP
C2
b) INTERNAL PRESET VOLTAGES
ᅄ4/! JJJቯ‫ޡݗ‬ᆀ൥
______________________________________________________________________________________
13
NBY2614:
7BĂ3NI{Ăଢ଼ኹቯࢯஂ໭Lj
ดᒙఎਈ
࢟ঢኡᐋ
‫ږ‬ᑍሆෂࡼ৛ါኡᐋ࢟ঢǖ
L=
VOUT × (VIN − VOUT )
fS × VIN × LIR × IOUT(MAX)
໚ᒦLjMJSᆐᔢቃᐴహ‫܈‬ሆ࢟ঢᆬ݆࢟ഗᎧ൸ঌᏲ࢟ഗࡼ
‫܈‬ᒋăገࡻࡵᔢଛࡼቶถਜ਼ᆮࢾቶLjኡᐋMJSဧ໚஑᎖31&
ᒗ51&ă
Ᏼ৊ࢾߛࡁሆLjኡᐋᒇഗ࢟ᔜ஧భถቃࡼ࢟ঢăఠ൅ࡵቶ
ถLjᄰ‫ޟ‬ॏᓨᄤድᄏࠟበ࢟ঢဵᔢଛኡᐋă‫ݙ‬൙‫ݧ‬፿ੜᒬ
ࠟበLjࠟበ‫ܘ‬ኍᔗ৫ࡍጲۣᑺᏴNBY2614:ࡼ࢟ഗሢᒜሆ
‫ۥݙ‬ਜ਼ă
ၒ߲࢟ྏኡᐋ
ኡᐋၒ߲࢟ྏࡼਈ୆‫ݬ‬ၫᆐ࢟ྏᒋĂFTSĂFTMਜ਼ऄࢾ࢟
ኹࢀăᑚቋ‫ݬ‬ၫ፬ሰED.EDᓞધ໭ࡼᑳᄏᆮࢾቶĂၒ߲࢟
ኹᆬ݆ਜ਼ၾზሰ።ăၒ߲ᆬ݆ဵᎅ᎖ࡀ߼Ᏼၒ߲࢟ྏᒦࡼ
࢟੗‫ܤ‬છĂ࢟ྏFTS࿟ࡼኹଢ଼ጲૺFTM࿟ࡼኹଢ଼‫ޘ‬ညࡼă
ଐႯᎅ᎖ၒ߲࢟ྏĂFTSਜ਼FTM፛໦ࡼၒ߲࢟ኹᆬ݆ǖ
VRIPPLE = VRIPPLE(C) + VRIPPLE(ESR) + VRIPPLE(ESL)
໚ᒦLjᎅ᎖ၒ߲࢟ྏĂFTSਜ਼FTM፛໦ࡼၒ߲ᆬ݆ॊܰᆐǖ
IP−P
VRIPPLE(C) =
8 x COUT x fS
VRIPPLE(ESR) = IP−P x ESR
I
VRIPPLE(ESL) = P−P x ESL
t ON
૞ǖ
I
VRIPPLE(ESL) = P−P x ESL
t OFF
૞໚ᒦᔢࡍࡼጙሲă
ಽ፿ᑚቋ৛ါኡᐋ߱ဪ࢟ྏᒋLjࡣᔢᒫࡼནᒋገᄰਭ࣪ዹ
૦૞ຶৰ‫ހࡼۇ‬၂౶௼ࢾăᄰ‫ޟ‬Ljᆬ݆࢟ഗᏗቃࡻࡵࡼၒ
߲࢟ኹᆬ݆ጐᏗቃăᎅ᎖࢟ঢᒋဵ௼ࢾ࢟ঢᆬ݆࢟ഗࡼፐ
ႤᒄጙLjჅጲ‫ݧ‬፿୷ࡍࡼ࢟ঢᒋ୓ଢ଼ࢅၒ߲࢟ኹᆬ݆ă‫ݧ‬
፿ჿࠣ࢟ྏLjᏴᓞધ໭ఎਈຫൈሆถ৫૝ࡻ୷ࢅࡼFTSਜ਼
FTMă‫ݧ‬፿ჿࠣ࢟ྏဟLjᎅ᎖FTMჅ፛໦ࡼᆬ݆࢟ኹభጲ
઄൒‫ݙ‬ଐă
ঌᏲၾზሰ።ጞ౷᎖Ⴥኡᐋࡼၒ߲࢟ྏăᏴঌᏲၾზሰ።
໐ମLjၒ߲ၾମ‫ܤ‬છ೟ᆐFTS y ΔJMPBEăᏴ఼ᒜ໭ᔫ߲न
።ᒄ༄Ljၒ߲ມ‫୓ތ‬஠ጙ‫ݛ‬౫ࡍLjན௼᎖࢟ঢਜ਼ၒ߲࢟ྏ
ᒋăႲઁLj఼ᒜ໭ᔫ߲ሰ።Ljࢯஂၒ߲࢟ኹᒗᎾ࿸ࡼ࢟ኹ
ᒋă఼ᒜ໭ሰ።ဟମན௼᎖‫ܕ‬ણࡒ౑ăৎ঱ࡼࡒ౑௥ᎌৎ
౐ࡼሰ።ဟମLj‫ܜ‬඾࢟ኹਭࣶມಭᆮኹᒋăሮᇼดྏ‫ݬ‬୅
‫ޡݗ‬࿸ଐ‫ݝ‬ॊă
ၒྜྷ࢟ྏኡᐋ
ኡᐋၒྜྷ࢟ྏᎌᓐ᎖ଢ଼ࢅ౶ᔈၒྜྷ࢟Ꮞࡼ࢟ഗख़ᒋLjି࿩
೫JDᒦࡼఎਈᐅဉăᔐၒྜྷ࢟ྏ‫ܘ‬ኍࢀ᎖૞ࡍ᎖ሆ೰ࢀါ
৊߲ࡼᒋLjጲۣߒၒྜྷᆬ݆࢟ኹᏴᒎ‫ܪ‬पᆍดLj݀༦ဧन
ౣᒗၒྜྷ࢟Ꮞࡼ঱ຫᆬ݆࢟ഗᔢቃǖ
CIN _ MIN =
D x TS x IOUT
VIN - RIPPLE
໚ᒦLjWJO.SJQQMF ᆐၒྜྷ࢟ྏჅᏤ኏ࡼᔢࡍၒྜྷᆬ݆࢟ኹLj
୐ፇকᒋࢅ᎖ᔢቃၒྜྷ࢟ኹࡼ3&ăEᆐᐴహ‫)܈‬WPVU0WJO*Lj
UT ᆐఎਈᒲ໐)20gT*ă
Ᏼఎਈຫൈሆࡼၒྜྷ࢟ྏᔜఝ።ቃ᎖ၒྜྷ࢟ᏎࡼᔜఝLj࠭
ऎဧ঱ຫఎਈ࢟ഗ‫્ݙ‬ᄰਭၒྜྷᏎLjऎဵᎅၒྜྷ࢟ྏ๬വă
ၒྜྷ࢟ྏ‫ܘ‬ኍߌ၊ఎਈ࢟ഗჅ፛໦ࡼᆬ݆࢟ഗăSNTၒྜྷ
ᆬ݆࢟ഗᎅሆါ௼ࢾǖ
IRIPPLE = ILOAD ×
VOUT × (VIN − VOUT )
VIN
໚ᒦLjJSJQQMF ᆐၒྜྷSNTᆬ݆࢟ഗă
࢟ঢ࢟ഗख़ख़ᒋ)JQ.Q*ྙሆǖ
V
V −V
IP − P = IN OUT x OUT
VIN
fS × L
14
______________________________________________________________________________________
7BĂ3NI{Ăଢ଼ኹቯࢯஂ໭Lj
ดᒙఎਈ
f P3 _ EA
࢟Ꮞࠅၒ਽ၫᎅၷ૵࢛ਜ਼ጙৈഃ࢛ᔝ߅ăၷ૵࢛ᎅၒ߲൉
݆໭࢟ঢMਜ਼ၒ߲൉݆࢟ྏDP ‫ޘ‬ညăၒ߲൉݆࢟ྏࡼFTS
௼ࢾഃ࢛ăၷ૵࢛ਜ਼ഃ࢛ຫൈᎅሆါ৊߲ǖ
fP1_ LC = fP2 _ LC =
f P2 _ EA
2
1
R1
C2
2
1
R2
C3
1
⎛ R + ESR ⎞
2π x L x C O x ⎜ O
⎟
⎝ RO + RL ⎠
fZ _ ESR =
1
2π x ESR x CO
࿟ၤऱ߈૥᎖D2! ??! D3ਜ਼S4! ??! S3ࡼଣ࿸Ljকଣ࿸Ᏼࣶ
ၫ።፿ᒦ߅ೂăᑚቋ૵࢛ਜ਼ഃ࢛ࡼᆡᒙᎅ࢟Ꮞࠅၒ਽ၫ
ࡼၷ૵࢛ਜ਼FTSഃ࢛ࡼຫൈ௼ࢾă჈થဵჅ໐ᆃࡼ‫ܕ‬ણࡒ
౑ࡼ਽ၫăሆෂดྏগၤ೫ଐႯNBY2614:‫ޡݗ‬Ꮔୈࡼሮ
ᇼ‫ݛ‬ᒾăࡩNBY2614:ၒ߲࢟ኹ‫ۻ‬࿸ᒙᆐᎾ࿸࢟ኹဟLjS4
ᆐJDด‫࢟ݝ‬ᔜLjS5‫ࡀݙ‬Ᏼ)ᅄ4c*ă
໚ᒦLjS M ᆐၒ߲࢟ঢࡼEDS )ᒇഗ࢟ᔜ*ਜ਼ด‫ݝ‬ఎਈ࢟ᔜ
SET)PO*ࡼᔐਜ਼ăSET)PO*ࡼ࢜ቯᒋᆐ31nΩ )ࢅ‫ܟ‬NPTGFU*
ਜ਼37nΩ )঱‫ܟ‬NPTGFU*ăSP ᆐၒ߲ঌᏲ࢟ᔜLj໚ᒋࢀ᎖
ऄࢾၒ߲࢟ኹ߹ጲऄࢾၒ߲࢟ഗăFTSᆐၒ߲൉݆࢟ྏࡼ
ᔐࢀ቉ࠈೊ࢟ᔜăྙਫᎌࣶৈᄴጙቯ੓ࡼၒ߲࢟ྏ݀ೊLj
࿟ါᒦFTSࢀ᎖࡝ৈၒ߲࢟ྏࡼFTS߹ጲၒ߲࢟ྏࡼၫ෹ă
Ᏼ࣪NBY2614:஠ቲᅪ‫߈ܠݝ‬࿸ᒙဟ)ᅄ4b*Ljၒ߲࢟ኹᎅሆ
ါ௼ࢾǖ
NBY2614:঱ఎਈຫൈᏤ኏‫ݧ‬፿ჿࠣၒ߲࢟ྏăᎅ᎖ჿࠣ
࢟ྏࡼFTSᄰ‫ޟ‬੪ࢅLj࣪።ࠅၒ਽ၫഃ࢛ࡼຫൈ঱᎖࡝ᆡ
ᐐፄຫൈgDLj݀༦কഃ࢛‫ݙ‬ถ‫ޡݗ‬ᎅ൉݆࢟ঢਜ਼ၒ߲࢟ྏ
‫ޘ‬ညࡼၷ૵࢛ăၷ૵࢛‫ޘ‬ညጙৈ51eC0လ۶ຫ߈ࡼᐐፄၱ
ିਜ਼ጙৈ291°ࡼሤጤăᇙ‫ތ‬हࡍ໭‫ܘ‬ኍ‫ޡݗ‬কᐐፄၱିਜ਼
ሤጤLjጲ૝ࡻጙৈᆮࢾࡼ౑ࡒ‫ܕ‬ણᇹᄻăፐࠥLj‫ݧ‬፿ᅄ4
ਜ਼ᅄ5ᒦჅာࡼJJJቯ‫ޡݗ‬ᆀ൥ăJJJቯ‫ޡݗ‬௥ᎌྯৈ૵࢛ਜ਼
ೝৈഃ࢛Lj໚ᒦ࢒ጙৈ૵࢛gQ2`FB ࠀ᎖ഃຫ)ᒇഗ*ăJJJቯ‫ݗ‬
‫ࡼޡ‬໚჈૵࢛ਜ਼ഃ࢛ᆡᒙᎅሆါ৊߲ǖ
࣪᎖1/7Wၒ߲LjᏴGCਜ਼PVUᒄମೌ୻ጙৈ9/17lΩ࢟ᔜă‫ܕ‬
ણࡼਭഃຫൈgD ።ᏴఎਈຫൈgT ࡼ21&ᒗ31&ᒄମă୷঱
ࡼਭഃຫൈభጲࡻࡵৎ౐ࡼၾზሰ።ăጙࡡgD ኡࢾLjD2ো
௣ሆ೰ऱ߈஠ቲଐႯǖ
f Z1_ EA
fZ2 _ EA
2
1
R1
C1
2
1
R3
C3
ࡩ
VIN
VP − P
C1 =
R
2 x π x R3 x (1 + L ) × fC
RO
2.5 x
໚ᒦLjWQ.Q ᆐख़ख़ᒋ࢟ኹ)࢜ቯᒋ2W*ă
ᎅ᎖ၒ߲MDၷ૵࢛ࡼ་ᔜปᄂቶLj୓JJJቯ‫ࡼޡݗ‬ೝৈഃ
࢛ຫൈ࿸ᒙᆐࢅ᎖MDၷ૵࢛ຫൈLjጲ‫ܣ‬ᄋ৙ᔗ৫ࡼሤᆡ
ᄋဍă୓ೝৈഃ࢛ຫൈ࿸ᒙᏴMDၷ૵࢛ຫൈࡼ91&Ljభጲ
ࡻࡵǖ
R1 =
C3 =
1
x
L x CO x (RO + ESR)
x
L x CO x (RO + ESR)
0.8 x C1
1
0.8 x R 3
RL + RO
RL + RO
______________________________________________________________________________________
15
NBY2614:
‫ޡݗ‬࿸ଐ
NBY2614:
7BĂ3NI{Ăଢ଼ኹቯࢯஂ໭Lj
ดᒙఎਈ
୓࢒औৈ‫࢛૵ޡݗ‬gQ3`FB ࿸ᒙࡵg[`FTSLjభࡻࡵǖ
R2
‫ܭ‬3/! ෝါኡᐋ
MODE CONNECTION
CO x ESR
C3
GND
୓࢒ྯৈ‫࢛૵ޡݗ‬࿸ᒙࡵఎਈຫൈࡼ203ă‫ږ‬ᑍሆါଐႯD3ǖ
1
C2 =
π × R1 × fS
Unconnected or
VDD/2
Forced PWM. Soft-start up into a
prebiased output (monotonic startup).
VDD
Skip Mode. Soft-start into a prebiased
output (monotonic startup).
ࡩਭഃຫൈීመ঱᎖ၷ૵࢛ຫൈဟLj࿟ၤऱ߈భᄋ৙።፿
‫ޡݗ‬ăࡩਭഃຫൈத႒ࢀ᎖ၷ૵࢛ຫൈဟLjဣଔࡼਭഃຫ
ൈገ঱᎖ଐႯࡻ߲ࡼຫൈᒋăᏴᑚᒬ༽ౚሆLjଢ଼ࢅS2ࡼ࢟
ᔜᒋభିቃਭഃຫൈăࠥᅪLjྙਫਭഃຫൈࡍ᎖311lI{ဟLj
୓JJJቯ‫ྯ࢒ࡼޡݗ‬ৈ૵࢛࿸ᒙᏴణதఎਈຫൈࠀLjጲᐐଝ
ሤᆡᎽ೟ăS4ࡼᅎୀᒋᆐ3lΩᒗ21lΩăᓖፀLjྙਫᒑখ‫ܤ‬
S5ᔜᒋ౶࿸ᒙ‫ݙ‬ᄴၒ߲Ljણവ‫ܤݙߒۣޡݗ‬ă
``````````````````````````````` ෝါኡᐋ
NBY2614:௥ᎌጙৈෝါኡᐋၒྜྷ)NPEF*Ljభ৙፿ઓኡᐋ
໭ୈࡼ৖ถෝါ)‫ݬ‬୅‫ܭ‬3*ă
COMPENSATION
TRANSFER
FUNCTION
࠭࢒ጙৈQXNࣅᔫఎဪLjᇢ࢟ഗඡሢᄰਭด‫ݝ‬5଀EBD
࢕ᐐLjᏴ239ৈဟᒩᒲ໐ᒄઁࡉࡵ22Bࡼ࢟ഗඡሢăᑚዹLj
૾‫߲ܣ‬ሚፀᅪࡼᎾມᒙၒ߲Ljጐభጲຳᆮૂআᆮኹၒ߲Lj
༦Ꭷఎဪኡᒦࡼ༓ᒜQXNෝါᇄਈă
ྟ໪ࣅ஠ྜྷᎾມᒙၒ߲ෝါ)࡝ࢯ໪ࣅ*
ࡩNPEF፛୭ॳహ૞ມᒙᒗWEE03ဟLjNBY2614:ளਭྟ໪
ࣅਭ߈ઁ஠ྜྷᎾມᒙၒ߲Ljၒ߲࢟ྏ‫ݙ‬ह࢟ăᑚᒬ৔ᔫऱ
ါጐ߂ᆐ࡝ࢯ໪ࣅLjሤਈာಿ༿‫ݬ‬ఠ࢜ቯ৔ᔫᄂቶᒦTubsujoh
Joup! Qsfcjbtfe! Pvuqvu݆ተă
16
OPEN-LOOP
GAIN
THIRD
POLE
DOUBLE POLE
GAIN (dB)
POWER-STAGE
TRANSFER
FUNCTION
SECOND
POLE
FIRST AND SECOND ZEROS
༓ᒜQXNෝါ
୓NPEF፛୭ೌ୻ᒗHOELjኡᒦ༓ᒜQXNෝါăᏴ༓ᒜ
QXNෝါሆLjNBY2614:৔ᔫᏴৼࢾࡼఎਈຫൈ)ᄰਭGSFR
࣡ࡼ࢟ᔜ࿸ᒙ*Ljᇄᄢ൴ߡăࡩFOᒙ঱ဟLjளਭ࣢᏷ࡼ୐
ೂဟମਭઁ௓ఎဪQXN৔ᔫăࢅ‫ܟ‬ఎਈ၅ሌࡌఎLj৊ᔈ
௟࢟ྏߠ࢟Ljጲ‫ܣ‬৊঱‫ܟ‬ఎਈᄋ৙ᐜ૵དࣅ࢟ኹăᏴဟ
ᒩᒲ໐உၦ૞ጙࡡࢅ‫ܟ‬ఎਈᇢ၃ިਭ2/46B࢟ഗ)࢜ቯᒋ*
ဟLj‫ݙ‬൙࿟ၤ༽ౚࡼ߲ሚࠨኔྙੜLjࢅ‫ܟ‬ఎਈ௿્ਈࣥă
ྙਫࢅ‫ܟ‬ఎਈᏴဟᒩᒲ໐உၦᒄ༄‫ۻ‬ਈࣥLjᐌ঱‫ܟ‬ఎਈ
Ᏼဟମମ৆ࡼထ᎜ဟମดࡌఎLjᒇࡵ࢟ঢ࢟ഗࡉࡵ1/:B
૞ࡵဟᒩᒲ໐உၦဟᆐᒏă
OPERATION MODE
Forced PWM
ᅄ5/! JJJቯ‫ޡݗ‬ာಿ
Ᏼ࡝ࢯ໪ࣅෝါᒦLjࢅ‫ܟ‬ఎਈਜ਼঱‫ܟ‬ఎਈ௿ۣߒਈࣥLjጲ
‫ܜ‬඾࣪Ꮎມᒙၒ߲ह࢟ăࡩGCࡉࡵTT࢟ኹဟLjఎဪQXN
৔ᔫăᎧ༓ᒜQXNෝါಢ႒Ljఎ໪QXN৔ᔫઁLjࢅ‫ܟ‬ఎ
ਈ၅ሌࡌఎLj৊ᔈ௟࢟ྏߠ࢟ă
NBY2614:થถ৫໪ࣅ஠ྜྷᎾມᒙLjၒ߲঱᎖‫࢟߂ܪ‬ኹऎ
ᇄኊᆐၒ߲ᅃ཭ह࢟Ljᑚਙ৖᎖Ᏼ239ৈဟᒩᒲ໐ดᄰਭ
5଀EBDဣሚࡼࢅ‫ܟ‬ఎਈࡼᇢ࢟ഗ఼ᒜăࡩGC࢟ኹި߲
WSFGJO y! :3/6&ጲઁLj࡝ࢯ໪ࣅෝါᏴ51:7ৈဟᒩᒲ໐ዓ
ဟઁᔈࣅ༤ધࡵ༓ᒜQXNෝါăࡩᅪ‫ݝ‬SFGJO࢟ኹࡼ࿟
࢟ဟମ‫ޟ‬ၫ୷ࡍဟLjऄᅪࡼዓߕဟମభऴᒏ࡝ࢯ໪ࣅᏴ
ྟ໪ࣅ໐ମਭᐁ࢐஠ྜྷ༓ᒜQXNෝါă
ࡩᏴSFGJOᔫ፿ᅪ‫ݝ‬૥ᓰLjྟ໪ࣅ஠ྜྷᎾມᒙෝါဟLjჅ
Ꮴ኏ࡼᔢࡍྟ໪ࣅဟମᆐ3ntă
______________________________________________________________________________________
7BĂ3NI{Ăଢ଼ኹቯࢯஂ໭Lj
ดᒙఎਈ
QDC‫ݚ‬௜ఠ൅ਜ਼ྲེ
୓NPEF፛୭ೌ୻ᒗWEELjኡᒦᄢ൴ߡෝါăᏴᄢ൴ߡෝ
ါᒦLjNBY2614:ఎਈᒑኊۣߒᏴ༵Ᏺሆࡼၒ߲)‫ݙ‬ถ࠭ၒ
߲ᇢ၃࢟ഗ*LjࡣᏴᒦࢀঌᏲ૞ᒮᏲሆLj྆భ৔ᔫᏴৼࢾ
ຫൈQXNෝါ)ᄰਭGSFR࣡ࡼ࢟ᔜ࿸ᒙ*ăᑚᔢࡍሢࣞ࢐
ᄋ঱೫༵ঌᏲ቉ൈ݀ଢ଼ࢅ೫ၒྜྷஸზ࢟ഗă
றᇼࡼQDC‫ݚ‬௜࣪૝ࡻࢅᐅĂᆮࢾࡼ৔ᔫᓨზऻ‫ޟ‬ᒮገă
ᅎୀ‫ݬ‬ᑍNBY2614:ຶৰ‫ݚࡼۇ‬௜౶૝ࡻᔢଛቶถăᆐࡉ
ࡵᔢଛࡼQDC‫ݚ‬௜Ljኍᔥክሆ೰ਖᐌǖ
ྙਫ߲ሚ঱‫ݾ‬ఎਈ‫ޠ‬໐ࠀ᎖హሔ૚ࣅ)ި߲9ৈဟᒩᒲ໐*
ࡼ༽ౚLjࢅ‫ݾ‬ఎਈ‫࣢ۻ‬᏷ࡌఎLjᏴ঱‫ܟ‬ఎਈࡼሆጙৈࡴᄰ
ᒲ໐༄ᒮ୐ᔈ௟࢟ྏ࿟Ⴜပࡼ࢟೟ă
3* ୓WEEĂJOਜ਼TT࿟ࡼ࢟ྏ஧భถ࢐ణதJDहᒙLj݀༦
໚ሤ።ࡼ፛୭‫ݧ‬፿ᒇ୻ᔓሣăۣߒ৖ൈ࢐)ೌ୻ᒗQHOE*
ਜ਼ቧ੓࢐)ೌ୻ᒗHOE*৆ಭă
Ᏼᄢ൴ߡෝါᒦLjࡩ࢟ঢ࢟ഗሆଢ଼ࡵ1/3B! )࢜ቯᒋ*ဟLjࢅ
‫ܟ‬ఎਈ‫ۻ‬ਈࣥLjጲཀྵۣၒ߲࢟ྏ࿟‫્ݙ‬ഗ߲नሶ࢟ഗጲ
ૺۣᑺᔢଛࡼᓞધ቉ൈ0ᔢቃ࢟Ꮞ࢟ഗă
4* ஧భถ࢐ۣߒ࣢༦౑ࡼࡍ࢟ഗവ஼ăჁ࣢ఎਈ࢟ഗവ
஼Lj݀஧భถ࢐ჁቃᎅMYĂၒ߲࢟ྏਜ਼ၒྜྷ࢟ྏተ߅
ࡼૄവă
঱‫ܟ‬ఎਈࡼᔢቃࡴᄰဟମ၊఼Ljཀྵۣࡉࡵ1/:B࢟ഗLjጲ‫ܜ‬
඾హᏲᄟୈሆ߲ሚ঱ຫᅃख൴ߡ݀భถᎅ᎖ऄᅪࡼఎਈႼ
੒ࡒ౶࢟Ꮞ࢟ഗኸႥ࿟ဍă
5* ୓JOĂMYਜ਼QHOEॊܰೌ୻ᒗጙৈ୷ࡍࡼ१ᄵෂLjጲ
‫ۑ‬ᓐJDྲེLj஠ጙ‫ݛ‬ᄋ঱቉ൈਜ਼‫ޠ‬໐భణቶă
૾ဧᏴ໭ୈఎ໪ဟኡᐋ೫ᄢ൴ߡෝါLjᏴྟ໪ࣅ໐ମ྆ᎅ
ด‫ݝ‬ኡࢾ࡝ࢯ໪ࣅෝါăࡩGC࢟ኹިਭWSFGJO y :3/6&ᒄઁ
ளਭ51:7ৈဟᒩᒲ໐ဟLj໭ୈᔈࣅᓞધᒗᄢ൴ߡෝါă
ྀੜဟ઀࣒భጲ࠭ᄢ൴ߡෝါᓞધࡵ༓ᒜQXNෝါLjनᒄ
ጾ཭ăၒ߲࢟ྏ።ᔗ৫ࡍLjጲ‫ܣ‬Ᏼ࿸ᒙဟମࡉࡵ༓ᒜQXN
ෝါਜ਼༵Ᏺሆᄢ൴ߡෝါჅ࣪።ࡼ‫ݙ‬ᄴᐴహ‫܈‬ඡሢဟLjሢ
ᒜ࢟ኹࡼਭߡ0ሆߡă
2* ୓ၒྜྷਜ਼ၒ߲࢟ྏೌ୻ᒗ৖ൈ࢐Ǘ୓Ⴥᎌ໚჈࢟ྏೌ
୻ᒗቧ੓࢐ă
6* ཀྵۣჅᎌࡼनౣೌሣ࣢༦ᒇLjनౣ࢟ᔜਜ਼‫ޡݗ‬Ꮔୈ።
஧భถణதJDहᒙă
7* ঱ຫఎਈஂ࢛ࡼᔓሣ)ྙMY*።কᏐಭැঢࡼෝผཌᎮ
)GCĂDPNQ*ă
______________________________________________________________________________________
17
NBY2614:
ᄢ൴ߡෝါ
``````````````````````````````` ፛୭๼ᒙ
``````````````````````````````` በຢቧᇦ
16
BST
17
LX
LX
18
LX
PGND
TOP VIEW
PGND
PROCESS: BiCMOS
15
14
13
PGND 19
12 PWRGD
PGND 20
11 FREQ
IN 21
10 OUT
MAX15039
IN 22
IN 23
3
4
5
6
REFIN
SS
2
CTL2
1
CTL1
+
VDD
EN 24
*EP
MODE
NBY2614:
7BĂ3NI{Ăଢ଼ኹቯࢯஂ໭Lj
ดᒙఎਈ
``````````````````````````````` ॖᓤቧᇦ
ྙኊᔢதࡼॖᓤᅪተቧᇦਜ਼੆๤‫ݚ‬௜Lj༿‫އ‬ኯ
www.maxim-ic.com.cn/packagesă
9
FB
ॖᓤಢቯ
ॖᓤ‫ܠ‬൩
ᆪ࡭‫ܠ‬੓
8
COMP
24 TQFN
T2444-4
21-0139
7
GND
THIN QFN
*EXPOSED PAD
Nbyjn ۱ய‫ࠀူێ‬
۱ய 9439ቧረ ᎆᑶ‫ܠ‬൩ 211194
඾ॅ࢟જǖ911!921!1421
࢟જǖ121.7322 62::
ࠅᑞǖ121.7322 63::
Nbyjn‫࣪ݙ‬Nbyjn‫ޘ‬ອጲᅪࡼྀੜ࢟വဧ፿ঌᐊLjጐ‫ݙ‬ᄋ৙໚ᓜಽ኏భăNbyjnۣഔᏴྀੜဟମĂ඗ᎌྀੜᄰۨࡼ༄ᄋሆኀখ‫ޘ‬ອᓾ೯ਜ਼ਖৃࡼཚಽă
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Nbyjn ဵ Nbyjn!Joufhsbufe!Qspevdut-!Jod/ ࡼᓖ‫ݿ‬࿜‫ܪ‬ă