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даташит MAX15005 PDF ( Datasheet )

MAX15005 Datasheet Download - Maxim Integrated Products

Номер произв MAX15005
Описание (MAX15004 / MAX15005) 4.5V to 40V Input Automotive Flyback/Boost/SEPIC Power-Supply Controllers
Производители Maxim Integrated Products
логотип Maxim Integrated Products логотип 



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MAX15005 Даташит, Описание, Даташиты
www.DataSheet.co.kr
19-0723; Rev 3; 1/11
EVAALVUAAILTAIOBNLEKIT
4.5V to 40V Input Automotive
Flyback/Boost/SEPIC Power-Supply Controllers
General Description
The MAX15004A/B/MAX15005A/B high-performance,
current-mode PWM controllers operate at an automo-
tive input voltage range from 4.5V to 40V (load dump).
The input voltage can go down as low as 2.5V after
startup if VCC is supplied by an external bias voltage.
The controllers integrate all the building blocks neces-
sary for implementing fixed-frequency isolated/noniso-
lated power supplies. The general-purpose boost,
flyback, forward, and SEPIC converters can be
designed with ease around the MAX15004/MAX15005.
The current-mode control architecture offers excellent
line-transient response and cycle-by-cycle current limit
while simplifying the frequency compensation.
Programmable slope compensation simplifies the
design further. A fast 60ns current-limit response time,
low 300mV current-limit threshold makes the controllers
suitable for high-efficiency, high-frequency DC-DC con-
verters. The devices include an internal error amplifier
and 1% accurate reference to facilitate the primary-side
regulated, single-ended flyback converter or nonisolat-
ed converters.
An external resistor and capacitor network programs
the switching frequency from 15kHz to 500kHz (1MHz for
the MAX15005A/B). The MAX15004A/B/MAX15005A/B
provide a SYNC input for synchronization to an external
clock. The maximum FET-driver duty cycle for the
MAX15004A/B is 50%. The maximum duty cycle can be
set on the MAX15005A/B by selecting the right combi-
nation of RT and CT.
The input undervoltage lockout (ON/OFF) programs the
input-supply startup voltage and can be used to shut-
down the converter to reduce the total shutdown cur-
rent down to 10µA. Protection features include
cycle-by-cycle and hiccup current limit, output overvolt-
age protection, and thermal shutdown.
The MAX15004A/B/MAX15005A/B are available in
space-saving 16-pin TSSOP and thermally enhanced
16-pin TSSOP-EP packages. All devices operate over
the -40°C to +125°C automotive temperature range.
Applications
Automotive
Vacuum Fluorescent Display (VFD) Power
Supply
Isolated Flyback, Forward, Nonisolated SEPIC,
Boost Converters
Pin Configurations appear at end of data sheet.
Features
Wide 4.5V to 40V Operating Input Voltage Range
Operates Down to 2.5V (with Bootstrapped VCC
Bias)
Current-Mode Control
Low 300mV, 5% Accurate Current-Limit Threshold
Voltage
Internal Error Amplifier with 1% Accurate Reference
RC Programmable 4% Accurate Switching
Frequency
Switching Frequency Adjustable from 15kHz to
500kHz (1MHz for the MAX15005A/B)
External Frequency Synchronization
50% (MAX15004) or Adjustable (MAX15005)
Maximum Duty Cycle
Programmable Slope Compensation
10µA Shutdown Current
Cycle-by-Cycle and Hiccup Current-Limit
Protection
Overvoltage and Thermal Shutdown Protection
-40°C to +125°C Automotive Temperature Range
16-Pin TSSOP or 16-Pin Thermally Enhanced
TSSOP-EP Packages
AEC-Q100 Qualified
Ordering Information
PART
PIN-PACKAGE MAX DUTY CYCLE
MAX15004AAUE+ 16 TSSOP-EP*
50%
MAX15004AAUE/V+ 16 TSSOP-EP*
50%
MAX15004BAUE+ 16 TSSOP
50%
MAX15004BAUE/V+ 16 TSSOP
50%
MAX15005AAUE+ 16 TSSOP-EP*
Programmable
MAX15005AAUE/V+ 16 TSSOP-EP*
Programmable
MAX15005BAUE+ 16 TSSOP
Programmable
MAX15005BAUE/V+ 16 TSSOP
Programmable
Note: All devices are specified over the -40°C to +125°C
temperature range.
+Denotes a lead(Pb)-free/RoHS-compliant package.
/V denotes an automotive qualified part.
*EP = Exposed pad.
________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
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MAX15005 Даташит, Описание, Даташиты
www.DataSheet.co.kr
4.5V to 40V Input Automotive
Flyback/Boost/SEPIC Power-Supply Controllers
ABSOLUTE MAXIMUM RATINGS
IN to SGND.............................................................-0.3V to +45V
IN to PGND.............................................................-0.3V to +45V
ON/OFF to SGND ........................................-0.3V to (VIN + 0.3V)
OVI, SLOPE, RTCT, SYNC, SS, FB, COMP,
CS to SGND .........................................-0.3V to (VREG5 + 0.3V)
VCC to PGND..........................................................-0.3V to +12V
REG5 to SGND .........................................................-0.3V to +6V
OUT to PGND .............................................-0.3V to (VCC + 0.3V)
SGND to PGND .....................................................-0.3V to +0.3V
VCC Sink Current (clamped mode) .....................................35mA
OUT Current (< 10μs transient) ..........................................±1.5A
Continuous Power Dissipation* (TA = +70°C)
16-Pin TSSOP-EP (derate 21.3mW/°C
above +70°C)..............................................................1702mW
16-Pin TSSOP (derate 9.4mW/°C above +70°C) ..........754mW
Operating Junction Temperature Range ...........-40°C to +125°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-60°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Soldering Temperature (reflow) .......................................+260°C
*As per JEDEC51 Standard, Multilayer Board.
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 = 14V, CIN = 0.1μF, CVCC = 0.1μF // 1μF, CREG5 = 1μF, VON/OFF = 5V, CSS = 0.01μF, CSLOPE = 100pF, RT = 13.7kΩ, CT =
560pF, VSYNC = VOVI = VFB = VCS = 0V, COMP = unconnected, OUT = unconnected. TA = TJ = -40°C to +125°C, unless otherwise
noted. Typical values are at TA = +25°C. All voltages are referenced to PGND, unless otherwise noted.) (Note 1) (Figure 5)
PARAMETER
POWER SUPPLY
Input Supply Range
Operating Supply Current
ON/OFF CONTROL
Input-Voltage Threshold
Input-Voltage Hysteresis
Input Bias Current
Shutdown Current
INTERNAL 7.4V LDO (VCC)
Output (VCC) Voltage Set Point
Line Regulation
UVLO Threshold Voltage
UVLO Hysteresis
Dropout Voltage
Output Current Limit
Internal Clamp Voltage
INTERNAL 5V LDO (REG5)
SYMBOL
CONDITIONS
VIN
IQ VIN = 40V, fOSC = 150kHz
VON
VHYST-ON
IB-ON/OFF
ISHDN
VON/OFF rising
VON/OFF = 40V
VON/OFF = 0V
VVCC
VUVLO-VCC
VHYST-UVLO
IVCC-ILIM
VVCC-CLAMP
IVCC = 0 to 20mA (sourcing)
VIN = 8V to 40V
VCC rising
VIN = 4.5V, IVCC = 20mA (sourcing)
IVCC sourcing
IVCC = 30mA (sinking)
MIN TYP MAX UNITS
4.5 40.0 V
2 3.1 mA
1.05 1.23 1.40
75
0.5
10 20
V
mV
μA
μA
7.15
3.15
10.0
7.4
1
3.5
500
0.25
45
10.4
7.60
3.75
0.5
10.8
V
mV/V
V
mV
V
mA
V
Output (REG5) Voltage Set Point
VREG5 VCC = 7.5V, IREG5 = 0 to 15mA (sourcing) 4.75 4.95 5.05
V
Line Regulation
Dropout Voltage
Output Current Limit
IREG5-ILIM
VCC = 5.5V to 10V
VCC = 4.5V, IREG5 = 15mA (sourcing)
IREG5 sourcing
2 mV/V
0.25 0.5
V
32 mA
2 _______________________________________________________________________________________
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MAX15005 Даташит, Описание, Даташиты
www.DataSheet.co.kr
4.5V to 40V Input Automotive
Flyback/Boost/SEPIC Power-Supply Controllers
ELECTRICAL CHARACTERISTICS (continued)
(VIN = 14V, CIN = 0.1μF, CVCC = 0.1μF // 1μF, CREG5 = 1μF, VON/OFF = 5V, CSS = 0.01μF, CSLOPE = 100pF, RT = 13.7kΩ, CT =
560pF, VSYNC = VOVI = VFB = VCS = 0V, COMP = unconnected, OUT = unconnected. TA = TJ = -40°C to +125°C, unless otherwise
noted. Typical values are at TA = +25°C. All voltages are referenced to PGND, unless otherwise noted.) (Note 1) (Figure 5)
PARAMETER
OSCILLATOR (RTCT)
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
Oscillator Frequency Range
RTCT Peak Trip Level
RTCT Valley Trip Level
RTCT Discharge Current
fOSC
VTH,RTCT
VTL,RTCT
IDIS,RTCT
Oscillator Frequency Accuracy
(Note 2)
Maximum PWM Duty Cycle
(Note 3)
DMAX
Minimum On-Time
tON-MIN
SYNC Lock-In Frequency Range
(Note 4)
SYNC High-Level Voltage
SYNC Low-Level Voltage
SYNC Input Current
SYNC Minimum Input Pulse Width
VIH-SYNC
VIL-SYNC
ISYNC
ERROR AMPLIFIER/SOFT-START
Soft-Start Charging Current
SS Reference Voltage
SS Threshold for HICCUP Enable
ISS
VSS
FB Regulation Voltage
VREF-FB
fOSC = 2 x fOUT for MAX15004A/B,
fOSC = fOUT for MAX15005A/B
VRTCT = 2V
RT = 13.7kΩ, CT = 4.7nF,
fOSC (typ) = 18kHz
RT = 13.7kΩ, CT = 560pF,
fOSC (typ) = 150kHz
RT = 21kΩ, CT = 100pF,
fOSC (typ) = 500kHz
RT = 7kΩ, CT = 100pF,
fOSC (typ) = 1MHz
MAX15004A/B
MAX15005A/B,
RT = 13.7kΩ, CT = 560pF,
fOSC (typ) = 150kHz
VIN = 14V
RT = 13.7kΩ, CT = 560pF,
fOSC (typ) = 150kHz
VSYNC = 0 to 5V
VSS = 0V
VSS rising
COMP = FB,
ICOMP = -500μA to +500μA
15 1000
0.55 x VREG5
0.1 x VREG5
1.30 1.33 1.36
-4 +4
kHz
V
V
mA
-4 +4
%
-5 +5
-7 +7
50
78.5 80 81.5
%
110 170
ns
102 200 %fOSC
2V
0.8 V
-0.5
+0.5
μA
50 ns
8
1.215
15
1.228
1.1
21
1.240
1.215 1.228 1.240
μA
V
V
V
FB Input Offset Voltage
FB Input Current
COMP Sink Current
VOS-FB
ICOMP-SINK
COMP = 0.25V to 4.5V,
ICOMP = -500μA to +500μA,
VSS = 0 to 1.5V
VFB = 0 to 1.5V
VFB = 1.5V, VCOMP = 0.25V
-5
-300
3
+5
+300
5.5
mV
nA
mA
_______________________________________________________________________________________ 3
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