Datasheet

MAX5019/MAX5020
Current-Mode PWM Controllers with Integrated
Startup Circuit
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(V
DD
= 13V, a 10µF capacitor connects V
CC
to GND, V
CS
= 0, V+ = 48V, 0.1µF capacitor connected from SS_SHDN to GND, NDRV
= open circuit, V
FB
= 3V, T
A
= -40°C to +85°C, unless otherwise noted. Typical values are at T
A
= +25°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.
V+ to GND……………………………………...……-0.3V to +120V
V
DD
to GND.………………………………….……….-0.3V to +40V
V
CC
to GND.………………….……………………-0.3V to +12.5V
FB, NDRV, SS_SHDN, CS to GND .……-0.3V to V
CC
+ 0.3V
V
DD
and V
CC
Current …………………...…………………..20mA
NDRV Current Continuous...………………………………….25mA
NDRV Current for Less than 1µs..………….…………….……±1A
Continuous Power Dissipation (T
A
= +70°C)
8-Pin SO (derate 5.88mW/°C above +70°C) .………....471mW
Operating Temperature Range…………..……...-40°C to +85°C
Storage Temperature Range……………..…….-65°C to +150°C
Lead Temperature (soldering, 10s) ………………………+300°C
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
SUPPLY CURRENT
I
V+(NS)
V
DD
= 0, V+ = 110V, driver not switching 0.8 1.6
V+ Supply Current
I
V+(S)
V+ = 110V, V
DD
= 0, FB = GND,
driver switching
1.6 3.0
mA
V+ Supply Current After Startup V+ = 110V, V
DD
= 13V, FB = GND 14 µA
I
VDD
(
NS
)
V
DD
= 36V, driver not switching 0.9 1.6
V
D D
S up p l y C ur r ent
I
VDD(S)
V
DD
= 36V, driver switching, FB = GND 2.1 3.0
mA
V+ Shutdown Current V
SS_SHDN
= 0, V+ = 110V 180 290 µA
V
DD
Shutdown Current V
SS_SHDN
= 0 4 20 µA
PREREGULATOR/STARTUP
V+ Input Voltage 18 110 V
V
DD
Supply Voltage 13 36 V
INTERNAL REGULATORS (V
CC
)
Powered from V+, I
CC
= 7.5mA, V
DD
= 0 7.5 9.8 12.0 V
V
CC
Output Voltage
Powered from V
DD
, I
CC
= 7.5mA 9.0 10.0 11.0 V
V
CC
Undervoltage Lockout V
CC_UVLO
V
CC
falling 6.6 V
OUTPUT DRIVER
Peak Source Current V
CC
= 11V (externally forced) 570 mA
Peak Sink Current V
CC
= 11V (externally forced) 1000 mA
NRDV High-Side Driver
Resistance
R
OH
V
CC
= 11V, externally forced,
NDRV sourcing 50mA
412Ω
NDRV Low-Side Driver
Resistance
R
OL
V
CC
= 11V, externally forced,
NDRV sinking 50mA
1.6 4 Ω
ERROR AMPLIFIER
FB Input Resistance R
IN
50 kΩ
FB Input Bias Current I
FB
V
FB =
V
SS_SHDN
±1 µA
Error Amplifier Gain (Inverting) A
VCL
-20 V/V
Closed-Loop 3dB Bandwidth 200 kHz
FB Input Voltage Range 23V