MAX5051 Maxim Integrated Products, MAX5051 Datasheet - Page 2

• Manufacturer Part Number: MAX5051
• Description: Parallelable Clamped Two-Switch Power-Supply Controller IC
• Manufacturer: Maxim Integrated Products

ABSOLUTE MAXIMUM RATINGS
AVIN, PVIN, XFRMRH to GND................................-0.3V to +80V
BST to GND ............................................................-0.3V to +95V
BST, DRVH to XFRMRH..........................................-0.3V to +12V
REG9, DRVDD, DRVL to GND................................-0.3V to +12V
DRVB, LXVDD, LXL, LXH to GND ..........................-0.3V to +12V
UVLO, STT, COMP, CON to GND ..........................-0.3V to +12V
FLTINT, RCFF to GND ............................................-0.3V to +12V
REG5, CS, CSS, FB to GND .....................................-0.3V to +6V
STARTUP, SYNCIN to GND......................................-0.3V to +6V
SYNCOUT, RCOSC to GND .....................................-0.3V to +6V
PGND to GND .......................................................-0.3V to +0.3V
LXL, LXH Current Continuous...........................................±50mA
DRVL, DRVH Current Continuous...................................±100mA
ELECTRICAL CHARACTERISTICS
(AVIN = 12V, PVIN = 12V, V
C
ence outputs unconnected except for bypass capacitors.)
Parallelable, Clamped Two-Switch
Power-Supply Controller IC
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.
2
SUPPLY CURRENT (AVIN, PVIN)
AVIN Standby Current
PVIN Standby Current
AVIN Supply Current
PVIN Supply Current
AVIN Input Voltage Range
+9V LDO (REG9)
PVIN Input Voltage Range
REG9 Output-Voltage Set Point
REG9 Line Regulation
REG9 Load Regulation
REG9 Dropout Voltage
REG9 Undervoltage Lockout
Threshold
REG9 Undervoltage Lockout
Threshold Hysteresis
+5V LDO (REG5)
REG5 Output-Voltage Set Point
REG5 Load Regulation
REG5 Dropout Voltage
REG5
_______________________________________________________________________________________
= 4.7µF, T
PARAMETER
A
= T
MIN
to T
UVLO
MAX
, unless otherwise noted. Typical values are at T
= V
SYMBOL
I
I
STT
V
V
V
ASTBY
PSTBY
I
I
AVIN
PVIN
REG9
REG5
PVIN
= 3V, V
V
V
V
RCFF floating
V
V
STARTUP, RCFF floating
Inferred from AVIN supply current test
Inferred from PVIN supply current test
V
V
I
I
V
I
I
to V
REG9
REG9
REG5
REG5
AVIN
STARTUP
BST
AVIN
BST
PVIN
PVIN
REG9
CON
REG9
= V
= V
= 11V
= 11V to 76V
= 0 to 80mA
= 80mA
= 0 to 40mA
= 40mA, measured with respect
= V
= V
= 3V, R
falling
XFRMRH
DRVDD
PVIN
PVIN
= V
CS
= 11V to 76V;
= 11V to 76V; V
RCOSC
CONDITIONS
= V
= 0V;
= V
DRVL, DRVH Peak Current (<500ns) ....................................±5A
PVIN, REG9 Continuous Current ....................................+120mA
REG5 Continuous Current ................................................+80mA
DRVB, RCFF, RCOSC, CSS Continuous Current .............±20mA
COMP, SYNCOUT Continuous Current ............................±20mA
REG9, REG5, and COMP Short to GND ....................Continuous
Continuous Power Dissipation (T
Operating Temperature Range .........................-40°C to +125°C
Maximum Junction Temperature (T
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
REG9
DRVDD
28-Pin TSSOP (derate 23.8mW/°C above +70°C) .....1905mW
28-Pin TSSOP (θ
= 24kΩ, C
; V
XFRMRH
= V
CS
REG9
A
= 0V;
CSS
= +25°C. All driver, voltage-regulator, and refer-
= 0V;
;
= 10nF, C
JA
)......................................................42°C/W
MIN
8.3
5.7
4.8
11
11
RCOSC
A
= +70°C)
J
) ..............................+150°C
= 100pF, C
TYP
0.65
300
400
750
0.1
0.5
0.5
8
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MAX
450
650
250
9.0
6.7
5.1
12
76
76
50
1
REG9
= 4.7µF,
UNITS
mV/V
mA
mA
mV
mV
mV
µA
µA
V
V
V
V
V
V
V