MAX5051 Maxim Integrated Products, MAX5051 Datasheet - Page 4

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

ELECTRICAL CHARACTERISTICS (continued)
(AVIN = 12V, PVIN = 12V, V
C
ence outputs unconnected except for bypass capacitors.)
Parallelable, Clamped Two-Switch
Power-Supply Controller IC
4
SYNCOUT Voltage High
SYNCOUT Voltage Low
RCOSC Peak Trip Level
RCOSC Valley Trip Level
RCOSC Input Bias Current
RCOSC Discharge MOSFET
R
RCOSC Discharge Pulse Width
UNDERVOLTAGE LOCKOUT (UVLO)
UVLO Threshold
UVLO Hysteresis
UVLO Input Bias Current
PWM COMPARATOR
RCFF Input Voltage Range
Feed-Forward Discharge
MOSFET R
CON Input Voltage Range
RCFF Level-Shift Voltage
CON Input Bias Current
Propagation Delay to Output
SYNCHRONOUS RECTIFIER PULSE TRANSFORMER DRIVER (LXVDD, LXH, LXL)
High-Side MOSFET R
Low-Side MOSFET R
LXH Rising to DRVL Rising Delay
CURRENT-LIMIT COMPARATOR (CS)
Current-Limit Threshold Voltage
Current-Limit Input Bias Current
Propagation Delay to Output
LOW-SIDE MOSFET DRIVER (DRVDD, DRVL, PGND)
Peak Source Current
Peak Sink Current
DRVL Resistance Sourcing
DRVL Resistance Sinking
REG5
DS(ON)
_______________________________________________________________________________________
= 4.7µF, T
PARAMETER
DS(ON)
A
= T
DS(ON)
DS(ON)
MIN
to T
UVLO
MAX
, unless otherwise noted. Typical values are at T
= V
R
SYMBOL
t
R
DS(RCFF)
V
R
I
V
dCPWM
STT
BUVLO
I
t
V
I
V
DSLXH
CPWM
DSLXL
BILIM
dILIM
V
UVLO
CON
HYS
ILIM
TH
= 3V, V
Sourcing 1.2mA
Sinking 2.4mA
Sinking 10mA
V
V
Sinking 10mA
DRVH, DRVL = unconnected, overdrive =
50mV, measured from CON to DRVL
LXH sourcing 10mA, V
LXL sinking 10mA, V
0 < V
DRVH, DRVL = unconnected, overdrive =
10mV, measured from CS to DRVL
V
V
V
V
I
I
DRVL
DRVL
UVLO
UVLO
DRVL
DRVDD
DRVL
DRVDD
CON
CS
= 50mA, V
= -50mA, V
= 0V, pulse width < 100ns;
= V
= 3V, R
rising
= 2.5V
< 0.3V
= V
= V
REG9
REG9
REG9
CONDITIONS
RCOSC
, pulse width < 100ns;
DRVDD
DRVDD
LXVDD
LXVDD
= 24kΩ, C
= V
= V
= V
REG9
REG9
= V
REG5
REG5
A
CSS
= +25°C. All driver, voltage-regulator, and refer-
= 10nF, C
MIN
1.18
-100
144
4.5
2.2
2.0
-2
-2
0
0
3
RCOSC
TYP
= 100pF, C
1.24
-0.3
130
154
100
2.5
0.2
6.5
1.7
0.6
50
50
50
90
90
5
2
5
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MAX
+100
1.30
100
100
164
5.1
0.3
2.4
3.5
1.4
+2
+2
12
10
3
6
REG9
= 4.7µF,
UNITS
mV
mV
µA
nA
µA
µA
ns
ns
ns
ns
Ω
Ω
Ω
Ω
Ω
Ω
V
V
V
V
V
V
V
V
A
A