Electrical characteristics, Absolute maximum ratings – Rainbow Electronics MAX15046B User Manual
Page 2
40V, High-Performance, Synchronous
Buck Controller
MAX15046
2 ______________________________________________________________________________________
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.
IN to GND ..............................................................-0.3V to +45V
V
CC
to GND ..................... -0.3V to lower of (V
IN
+ 0.6V) and 6V
EN, DRV to GND .....................................................-0.3V to +6V
PGOOD to GND ....................................................-0.3V to +45V
PGND to GND ......................................................-0.3V to +0.3V
DL to PGND .............................................-0.3V to (V
DRV
+ 0.3V)
BST to PGND .......................................................-0.3V to +50V
LX and CSP to PGND ...............................................-1V to +45V
LX and CSP to PGND ............................-2V (50ns max) to +45V
BST to LX .................................................................-0.3V to +6V
CSP to LX .............................................................-0.3V to +0.3V
DH to LX .................................................. -0.3V to (V
BST
+ 0.3V)
All Other Pins to GND .............................. -0.3V to (V
CC
+ 0.3V)
V
CC
Short Circuit to GND ..........................................Continuous
PGOOD Maximum Sink Current .........................................20mA
Continuous Power Dissipation (T
A
= +70NC):
16-Pin QSOP (derate 9.6mW/NC above +70NC) .......771.5mW
16-Pin QSOP-EP (derate 22.7mW/NC above +70NC) 1818.2mW
Junction-to-Case Thermal Resistance (θ
JC
) (Note 1)
16-Pin QSOP ................................................................37NC/W
16-Pin QSOP-EP ............................................................6NC/W
Junction-to-Ambient Thermal Resistance (θ
JA
) (Note 1)
16-Pin QSOP ...........................................................103.7NC/W
16-Pin QSOP-EP ..........................................................44NC/W
Operating Temperature Range ........................ -40NC to +125NC
Junction Temperature .....................................................+150NC
Storage Temperature Range ............................ -65NC to +150NC
Lead Temperature (soldering, 10s) ................................+300NC
ELECTRICAL CHARACTERISTICS
(V
IN
= 24V, V
EN
= 5V, V
GND
= V
PGND
= 0V, C
IN
= 1FF, C
VCC
= 4.7FF, R
RT
= 49.9kI, T
A
= T
J
= -40NC to +125NC, unless otherwise
noted. Typical values are at T
A
= +25NC.) (Note 2)
ABSOLUTE MAXIMUM RATINGS
Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-lay-
er board. For detailed information on package thermal considerations, refer to .
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
SYSTEM SPECIFICATIONS
Input-Voltage Range
V
IN
4.5
40
V
V
IN
= V
CC
= V
DRV
4.5
5.5
Quiescent Supply Current
I
IN_Q
V
IN
= 24V, V
FB
= 0.9V, no switching
2
3
mA
Shutdown Supply Current
I
IN_SBY
V
IN
= 24V, V
EN
= 0V, I
VCC
= 0,
PGOOD = unconnected
0.35
0.55
mA
V
CC
REGULATOR
Output Voltage
V
VCC
6V ≤ V
IN
≤ 40V, I
LOAD
= 6mA
5
5.25
5.5
V
V
CC
Regulator Dropout
V
IN
= 4.5V, I
LOAD
= 25mA
0.18
0.45
V
V
CC
Short-Circuit Output Current
V
IN
= 5V
30
55
90
mA
V
CC
Undervoltage Lockout
V
CCUVLO
V
VCC
rising
3.8
4
4.2
V
V
CC
Undervoltage Lockout
Hysteresis
400
mV
ERROR AMPLIFIER (FB, COMP)
FB Input-Voltage Set Point
V
FB
584
590
596
mV
FB Input Bias Current
I
FB
V
FB
= 0.6V
-250
+250
nA
FB to COMP Transconductance
g
M
I
COMP
= Q20FA
600
1200
1800
F
S
Open-Loop Gain
80
dB
Unity-Gain Bandwidth
Capacitor from COMP to GND =
47pF
5
MHz