MAX5068 Maxim Integrated Products, MAX5068 Datasheet - Page 2

• Manufacturer Part Number: MAX5068
• Description: Current-Mode PWM Controller
• Manufacturer: Maxim Integrated Products

ABSOLUTE MAXIMUM RATINGS
IN to PGND ............................................................-0.3V to +30V
IN to AGND.............................................................-0.3V to +30V
V
V
FB, COMP, CS, HYST, SYNC, REG5 to AGND ........-0.3V to +6V
UVLO/EN, RT, DT, SCOMP, FLTINT to AGND .........-0.3V to +6V
NDRV to PGND...........................................-0.3V to (V
High-Frequency, Current-Mode PWM Controller
with Accurate Programmable Oscillator
ELECTRICAL CHARACTERISTICS
(V
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.
2
UNDERVOLTAGE LOCKOUT/STARTUP
Bootstrap UVLO Wake-Up Level
Bootstrap UVLO Shutdown Level
UVLO/EN Wake-Up Threshold
UVLO/EN Shutdown Threshold
HYST FET On-Resistance
HYST FET Leakage Current
IN Supply Current In
Undervoltage Lockout
IN Range
INTERNAL SUPPLIES (V
V
REG5 Output Voltage
REG5 Short-Circuit Current Limit
IN Supply Current After Startup
Shutdown Supply Current
GATE DRIVER (NDRV)
Driver Output Impedance
Driver Peak Output Current
PWM COMPARATOR
Comparator Offset Voltage
Comparator Propagation Delay
Minimum On-Time
CURRENT-LIMIT COMPARATOR
Current-Limit Trip Threshold
CC
CC
VCC
IN
CC
_______________________________________________________________________________________
to PGND..........................................................-0.3V to +13V
to AGND..........................................................-0.3V to +13V
= +12V for the MAX5068B/E/F; V
Regulator Set Point
= 1µF; R
PARAMETER
RT
= 100kΩ; NDRV = floating; T
CC
and REG5)
Z
Z
R
SYMBOL
V
I
OUT(HIGH)
t
OUT(LOW)
t
REG5_SC
I
PD_PWM
D S ( ON ) _H
ON(MIN)
IN
OS_PWM
V
LEAK_H
I
V
V
V
V
V
I
I
START
IN_SD
NDRV
CCSP
V
SUVR
SUVF
ULR2
REG5
ULF2
V
I
IN
CS
= +23.6V for the MAX5068A/C/D at startup, then reduces to +12V; C
IN
A
= T
V
V
V
V
MAX5068A/B/D/F only, sinking 50mA,
V
V
V
V
I
V
NDRV sinking 100mA
NDRV sourcing 25mA
Sinking
Sourcing
V
V
Includes t
MIN
REG5
IN
IN
UVLO/EN
UVLO/EN
UVLO/EN
UVLO/EN
IN
IN
IN
COMP
CS
CC
= + 10.8V to + 24V , V
rising, MAX5068A/C/D only
falling, MAX5068A/C/D only
= +19V, V
= +24V
= 0.1V
to T
= 0 to 1mA
+ 0.3V)
- V
MAX
CS_BLANK
rising
falling
= 0V
= 2V, V
CS
, unless otherwise noted. Typical values are at T
UVLO/EN
CONDITIONS
HYST
AGND to PGND .....................................................-0.3V to +0.3V
Continuous Power Dissipation
Operating Temperature Range..........................-40°C to +125°C
Maximum Junction Temperature .....................................+150°C
Storage Temperature Range .............................-60°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
16-Pin TSSOP-EP (derate 21.3mW/°C above +70°C) ...1702mW
C C
= 5V
< V
f
f
SW
SW
sour ci ng 1µA to 25m A
ULF2
= 1.25MHz
= 100kHz
19.68
1.205
MIN
9.05
10.8
4.85
1.30
298
7.0
1.230
1000
TYP
21.6
9.74
1.18
5.00
1.60
A
650
110
314
2.5
10
47
18
40
3
5
2
3
= +25°C.) (Note 1)
IN
= C
23.60
10.43
1.255
MAX
24.0
10.5
5.15
2.00
330
90
90
4
6
REG5
= 0.1µF;
UNITS
mA
mA
mA
mV
nA
µA
µA
ns
ns
Ω
Ω
V
V
V
V
V
V
V
V