MAX8792 Maxim Integrated Products, MAX8792 Datasheet - Page 2

• Manufacturer Part Number: MAX8792
• Description: Single Quick-PWM Step-Down Controller
• Manufacturer: Maxim Integrated Products

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ABSOLUTE MAXIMUM RATINGS
TON to GND ...........................................................-0.3V to +28V
V
V
EN, SKIP, PGOOD to GND.......................................-0.3V to +6V
REF, REFIN to GND ....................................-0.3V to (V
ILIM, FB to GND .........................................-0.3V to (V
DL to GND ..................................................-0.3V to (V
BST to GND .................................................(V
BST to LX..................................................................-0.3V to +6V
BST to V
Single Quick-PWM Step-Down
Controller with Dynamic REFIN
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.
ELECTRICAL CHARACTERISTICS
(Circuit of Figure 1, V
ified. Typical values are at T
2
PWM CONTROLLER
Input Voltage Range
Quiescent Supply Current (V
Shutdown Supply Current (V
V
On-Time
Minimum Off-Time
TON Shutdown Supply Current
REFIN Voltage Range
FB Voltage Range
FB Voltage Accuracy
FB Input Bias Current
Load-Regulation Error
Line-Regulation Error
Soft-Start/-Stop Slew Rate
Dynamic REFIN Slew Rate
REFERENCE
Reference Voltage
DD
CC
DD
_______________________________________________________________________________________
to GND ..............................................................-0.3V to +6V
to GND ................................................-0.3V to (V
-to-V
DD
CC
PARAMETER
.............................................................-0.3V to +28V
Resistance
IN
= 12V, V
A
DD
DD
= +25°C.) (Note 1)
)
)
DD
= V
SYMBOL
I
t
DD
OFF(MIN)
CC
V
I
SHDN
V
t
R
REFIN
V
V
t
V
DYN
I
t
ON
REF
FB
SS
+ I
CC
FB
FB
IN
= V
CC
DD
EN
- 0.3V) to +34V
= 5V, REFIN = ILIM = REF, SKIP = GND. T
FB forced above REFIN
EN = GND, T
V
V
(Note 3)
(Note 3)
EN = GND, V
V
(Note 2)
(Note 2)
V
m easur ed at FB,
V
SKIP = V
V
V
V
I
V
Rising/falling edge on EN
Rising edge on REFIN
V
to 5.5V
LOAD
IN
FB
CC
REFIN
I N
REFIN
REFIN
FB
CC
CC
DD
CC
DD
CC
= 12V,
= 2V to 26V ,
= 1.0V
= 0.5V to 2.0V, T
= 0V or 5V, T
= 4.5V to 5.5V, V
= 4.5V
+ 0.3V)
+ 0.3V)
+ 0.3V)
+ 0.3V)
= 0 to 3A, SKIP = V
= 0.5V,
= 1.0V
= 2.0V
DD
A
TON
= +25°C
CONDITIONS
R
R
R
T
T
T
T
T
No load
I
= 26V,
A
REF
A
A
A
A
A
TON
TON
TON
DH to LX ....................................................-0.3V to (V
REF Short Circuit to GND ...........................................Continuous
Continuous Power Dissipation (T
Operating Temperature Range (extended) .........-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature.........................................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
= +25°C
= +25°C
= 0°C to +85°C
= +25°C
= 0°C to +85°C
= 0°C to +85°C
A
IN
14-Pin 3mm x 3mm TDFN
= -10µA to +50µA
= +25°C
= 97.5kΩ (600kHz)
= 200kΩ (300kHz)
= 302.5kΩ (200kHz)
= 4.5V to 26V
DD
(derated 24.4mW/°C above +70°C)....................1951mW
A
= 0°C to +85°C, unless otherwise spec-
0.495
0.493
0.995
0.993
1.990
1.990
1.98
MIN
118
250
354
-0.1
2
0
0
A
= +70°C)
TYP
0.01
0.25
2.00
139
278
417
200
0.7
0.1
0.5
1.0
2.0
0.1
20
1
8
0.505
0.507
1.005
1.007
2.010
2.010
MAX
V
V
+0.1
2.02
160
306
480
300
1.2
26
REF
REF
2
1
BST
UNITS
mV/µs
mV/µs
+ 0.3V)
mA
µA
µA
µA
ns
ns
Ω
%
%
V
V
V
V
V