Operating Temperature Range ......................... -40°C to +125°C
Maximum Junction Temperature .....................................+150°C
Storage Temperature Range ............................ -65°C to +150°C
Lead Temperature (soldering, 10s) ................................. +300°C
Soldering Temperature (reflow) .......................................+260°C
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.
Package Information
PACKAGE TYPE: 16 TQFN
Package Code
Outline Number
Land Pattern Number
THERMAL RESISTANCE, FOUR-LAYER BOARD
Junction to Ambient (θ
JA
)
Junction to Case (θ
JC
)
48°C/W
7°C/W
T1633+4
21-0136
90-0031
For the latest package outline information and land patterns (footprints), go to
www.maximintegrated.com/packages.
Note that a “+”,
“#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing
pertains to the package regardless of RoHS status.
Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer board.
For detailed information on package thermal considerations, refer to
www.maximintegrated.com/thermal-tutorial.
www.maximintegrated.com
Maxim Integrated
│
2
MAX5974A/MAX5974B/
MAX5974C/MAX5974D
Electrical Characteristics
Active-Clamped, Spread-Spectrum,
Current-Mode PWM Controllers
(V
IN
= 12V (for MAX5974A/MAX5974C, bring V
IN
up to 17V for startup), V
CS
= V
CSSC
= V
DITHER/SYNC
= V
FB
= V
FFB
= V
DCLMP
= V
GND
, V
EN
= +2V, NDRV = AUXDRV = SS = COMP = unconnected, R
RT
= 34.8kΩ, R
DT
= 25kΩ, C
IN
= 1µF, T
A
= -40°C to
+85°C (MAX5974BETE+, MAX5974CETE+, MAX5974DETE+), T
A
= -40°C to +105°C (MAX5974AETE+), T
A
= -40°C to +125°C
(MAX5974AATE+, MAX5974DATE+), unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MAX5974A/C
Bootstrap UVLO Wakeup Level
V
INUVR
V
IN
rising
MAX5974B/D
MIN
15.4
-40°C to
+85°C
-40°C to
+125°C
8
7.95
6.65
6.6
17
TYP
16
8.4
8.4
7
7
18.5
100
MAX
16.5
8.85
8.85
7.35
7.35
20
150
UNITS
UNDERVOLTAGE LOCKOUT/STARTUP (IN)
V
Bootstrap UVLO Shutdown
Level
IN Clamp Voltage
V
INUVF
V
IN_CLAMP
V
IN
falling
I
IN
= 2mA (sinking)
V
IN
= +15V (for
MAX5974A/C);
V
IN
= +7.5V (for
MAX5974B/D), when
in bootstrap UVLO
V
IN
= +12V
-40°C to +85°C
-40°C to +125°C
V
V
-40°C to +85°C
IN Supply Current in
Undervoltage Lockout
I
START
µA
-40°C to +125°C
-40°C to +85°C
-40°C to +125°C
-40°C to +85°C
-40°C to +125°C
-40°C to +85°C
-40°C to +125°C
1.17
1.17
100
1.8
1.8
1.215
1.2155
250
3
4
1.26
1.2655
IN Supply Current After Startup
ENABLE (EN)
Enable Threshold
I
C
mA
V
ENR
V
ENF
V
EN
rising
V
EN
falling
-40°C to +85°C
-40°C to +105°C
1.09
1.085
1.14
1.14
1.19
1.19
1
1.5
V
Input Current
OSCILLATOR (RT)
RT Bias Voltage
NDRV Switching Frequency
Range
NDRV Switching Frequency
Accuracy
I
EN
µA
V
RT
f
SW
-40°C to +85°C
-40°C to +105°C
D
MAX
f
SW
= 250kHz
-40°C to +85°C
-40°C to +125°C
100
-8
-11
79
79
2.91
1.23
600
+8
V
kHz
%
+11
80
80
82
83
%
Maximum Duty Cycle
SYNCHRONIZATION (SYNC)
Synchronization Logic-High
Input
Synchronization Pulse Width
Synchronization Frequency
Range
V
IH-SYNC
V
50
ns
2x
f
SW
kHz
f
SYNCIN
1.1 x
f
SW
www.maximintegrated.com
Maxim Integrated
│
3
MAX5974A/MAX5974B/
MAX5974C/MAX5974D
Electrical Characteristics (continued)
Active-Clamped, Spread-Spectrum,
Current-Mode PWM Controllers
(V
IN
= 12V (for MAX5974A/MAX5974C, bring V
IN
up to 17V for startup), V
CS
= V
CSSC
= V
DITHER/SYNC
= V
FB
= V
FFB
= V
DCLMP
= V
GND
, V
EN
= +2V, NDRV = AUXDRV = SS = COMP = unconnected, R
RT
= 34.8kΩ, R
DT
= 25kΩ, C
IN
= 1µF, T
A
= -40°C to
+85°C (MAX5974BETE+, MAX5974CETE+, MAX5974DETE+), T
A
= -40°C to +105°C (MAX5974AETE+), T
A
= -40°C to +125°C
(MAX5974AATE+, MAX5974DATE+), unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 1)
PARAMETER
Maximum Duty Cycle During
Synchronization
DITHERING RAMP GENERATOR (DITHER)
Charging Current
Discharging Current
Ramp’s High Trip Point
Ramp’s Low Trip Point
SOFT-START AND RESTART (SS)
Charging Current
I
SS-CH
I
SS-D
Discharging Current
I
SS-DH
V
SS-DTH
t
RSTRT-MIN
V
SS-DMAX
I
DCLMP
V
DCLMP-R
V
SS-HI
D
MAX
(typ) = (V
SS-DMAX
/2.43V)
V
DCLMP
= 0 to 5V
D
MAX
(typ) =
1 - (V
DCLMP/
2.43V)
I
NDRV
(sinking) =
100mA
0
-100
V
DCLMP
= 0.5V
V
DCLMP
= 1V
V
DCLMP
= 2V
-40°C to +85°C
-40°C to +125°C
73
54
14.7
0
75.4
56
16.5
1.9
1.9
4.7
1
0.65
t
NDRV-R
R
AUX-N
R
AUX-P
t
NDRV-F
C
NDRV
= 1nF
C
NDRV
= 1nF
I
AUXDRV
(sinking) =
50mA
-40°C to +85°C
-40°C to +125°C
14
27
4.3
4.3
10.6
0.5
7.7
7.95
18.9
-40°C to +85°C
-40°C to +125°C
V
SS
= 2V, normal shutdown
(V
EN
< V
ENF
or V
IN
< V
INUVF
),
V
SS
= 2V, hiccup mode discharge for
t
RSTRT
(Note 2)
9.5
9
0.65
1.6
10
10
1.34
2
0.15
1024
5
2
+100
77.5
58
18.3
3.4
3.5
8.3
%
10.5
11
2
2.4
µA
mA
µA
V
Clock
Cycles
V
V
nA
V
DITHER
= 0V
V
DITHER
= 2.2V
-40°C to +85°C
-40°C to +125°C
-40°C to +85°C
-40°C to +125°C
45
44.5
43
42
50
50
50
50
2
0.4
55
55.5
57
58
µA
µA
V
V
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
%
D
MAX
x f
SYNC
/
f
SW
Discharge Threshold to Disable
Hiccup and Restart
Minimum Restart Time During
Hiccup Mode
Normal Operating High Voltage
Duty-Cycle Control Range
DUTY-CYCLE CLAMP (DCLMP)
DCLMP Input Current
Duty-Cycle Control Range
NDRV DRIVER
Pulldown Impedance
Pullup Impedance
Peak Sink Current
Peak Source Current
Fall Time
Rise Time
AUXDRV DRIVER
Pulldown Impedance
Pullup Impedance
Peak Sink Current
R
NDRV-N
R
NDRV-P
Ω
Ω
A
A
ns
ns
Ω
Ω
A
I
NDRV
(sourcing) = 50mA
I
AUXDRV
(sourcing) = 25mA
www.maximintegrated.com
Maxim Integrated
│
4
MAX5974A/MAX5974B/
MAX5974C/MAX5974D
Electrical Characteristics (continued)
Active-Clamped, Spread-Spectrum,
Current-Mode PWM Controllers
(V
IN
= 12V (for MAX5974A/MAX5974C, bring V
IN
up to 17V for startup), V
CS
= V
CSSC
= V
DITHER/SYNC
= V
FB
= V
FFB
= V
DCLMP
= V
GND
, V
EN
= +2V, NDRV = AUXDRV = SS = COMP = unconnected, R
RT
= 34.8kΩ, R
DT
= 25kΩ, C
IN
= 1µF, T
A
= -40°C to
+85°C (MAX5974BETE+, MAX5974CETE+, MAX5974DETE+), T
A
= -40°C to +105°C (MAX5974AETE+), T
A
= -40°C to +125°C
(MAX5974AATE+, MAX5974DATE+), unless otherwise noted. Typical values are at T
I'm almost broken. I've installed the Cadence software, but it still reminds me that extracta is not in the environment variable, but it is indeed there, and I can use extracta in cmd. I'm here to ask...
Abstract: This paper introduces the performance and characteristics of the MC34262 series PFC control chip, focusing on how to design circuit component parameters in APFC applications, and analyzing s...
Until now, designers have faced a trade-off in ADC selection. Pipeline converters offer high resolution and wide dynamic range, but their power consumption is quite high. The alternative, discrete ...[Details]
No other sector is feeling the pressure for change more acutely than the healthcare industry. Healthcare organizations and services are desperate to reduce costs, but the challenge is to do so without...[Details]
Designers of hearing aids have stringent requirements. Hearing aids must be small enough to fit in or behind the ear, operate on ultra-low power, and be free of noise or distortion. To meet these requ...[Details]
Conventional ECG recorders are one of the main means for doctors to diagnose heart diseases, but they can only record short heartbeats. In many cases, it is difficult to record ECG changes during a...[Details]
In some warehousing management, manufacturing, meteorological observation, scientific research and daily life, the requirements for temperature and humidity are common. For example, the "Interim Pr...[Details]
TD-SCDMA terminal conformance test includes three types of tests: RF index test (reference standard: 3GPPTS34.122), protocol signaling test (reference standard: 3GPPTS34.123) and other tests (refer...[Details]
AD8302
Introduction
AD8302 is a monolithic integrated circuit for RF/IF amplitude and phase measurement from ADI. It is mainly composed of two precisely matched broadband logarithmic det...[Details]
In the future, a complete automobile safety system must fully combine gyroscopes, accelerometers, steering wheel and brake pedal position detectors, and tire speed detection systems to accurately ...[Details]
Preface
Phase-modulated pulse signals can achieve a large compression ratio. As a commonly used pulse compression signal, they are widely used in modern radar and communication systems. Wi...[Details]
introduction
Video surveillance systems are widely used in industrial, military and civil fields, playing an important role in the security and environmental monitoring of these industries...[Details]
Multi-parameter monitor is an important device in clinical nursing. It can monitor the patient's ECG, blood pressure, blood oxygen saturation, respiratory rate, pulse rate and temperature. At present,...[Details]
MIPS Technologies Inc. has introduced the CI10084tg, a next-generation global positioning system (GPS) RF tuner IP solution. The silicon-proven, integrated low-noise RF front end for GPS receivers...[Details]
Introduction
Wireless operators are driving demand for broadband and data rates by offering enhanced data services to increase average revenue per user (ARPU). The need to provide users with ...[Details]
introduction
The data detected by various
measuring instruments
often need to be transferred to a PC for data processing and archiving, so as to make full use of the rich hardware an...[Details]
According to In-Stat/MDR, the number of mobile phones with Bluetooth capabilities will reach at least 300 million by 2005. One of the clear evidences of the increasing adoption of Bluetooth is that...[Details]
PCB Design
京公网安备 11010802033920号
EEWORLD
