MAX16993 Datasheet PDF - Maxim Integrated Products


www.Datasheet-PDF.com

MAX16993
Maxim Integrated Products

Part Number MAX16993
Description Step-Down Controller
Page 25 Pages

MAX16993 datasheet pdf
View PDF for PC
MAX16993 pdf
View PDF for Mobile


No Preview Available !

MAX16993
EVALUATION KIT AVAILABLE
Step-Down Controller with
Dual 2.1MHz Step-Down DC-DC Converters
General Description
The MAX16993 power-management integrated cir-
cuit (PMIC) is a 2.1MHz, multichannel, DC-DC con-
verter designed for automotive applications. The device
integrates three supplies in a small footprint. The device
includes one high-voltage step-down controller (OUT1)
designed to run directly from a car battery and two low-
voltage step-down converters (OUT2/OUT3) cascaded from
OUT1. Under no-load conditions, the MAX16993 consumes
only 30µA of quiescent current, making it ideal for automotive
applications.
The high-voltage synchronous step-down DC-DC controller
(OUT1) operates from a voltage up to 36V continuous and
is protected from load-dump transients up to 42V. There is a
pin-selectable frequency option of either 2.1MHz or a factory-
set frequency for 1.05MHz, 525kHz, 420kHz, or 350kHz. The
low-voltage, synchronous step-down DC-DC converters run
directly from OUT1 and can supply output currents up to 3A.
The device provides a spread-spectrum enable input (SSEN)
to provide quick improvement in electromagnetic interference
when needed. There is also a SYNC I/O for providing either
an input to synchronize to an external clock source or an out-
put of the internally generated clock (see the Selector Guide).
The device includes overtemperature shutdown and overcur-
rent limiting. The device also includes individual RESET_
outputs and individual enable inputs. The individual RESET_
outputs provide voltage monitoring for all output channels.
The MAX16993 is available in a 32-pin side-wettable TQFN-
EP package and is specified for operation over the -40°C to
+125°C automotive temperature range.
Applications
● Automotive
● Industrial
Features
High-Voltage DC-DC Controller
• 3.5V to 36V Operating Supply Voltage
• 42V Load-Dump Protection
• Output Voltage: Pin Selectable, Fixed or
Resistor-Divider Adjustable
• 350kHz to 2.1MHz Operation
30μA Quiescent Current with DC-DC
Controller Enabled
Dual High-Efficiency 2.1MHz DC-DC Converters
• Run Directly from OUT1
• 3A Integrated FETs
• 0.8V to 3.95V Output Voltage
• Fixed or Resistor-Divider-Adjustable Output Voltage
• 180° Out-of-Phase Operation
Individual Enable Inputs
Individual RESET_ Outputs
Thermal-Warning Indication Output
Forced-PWM and Skip Modeshttp://www.DataSheet4U.net/
Overtemperature and Short-Circuit Protection
32-Pin (5mm x 5mm x 0.8mm)
Side-Wettable TQFN-EP
-40°C to +125°C Operating Temperature Range
Ordering Information and Selector Guide appear at end of
data sheet.
19-6684; Rev 0; 5/13



No Preview Available !

MAX16993
Step-Down Controller with
Dual 2.1MHz Step-Down DC-DC Converters
Absolute Maximum Ratings
VSUP, EN1 to GND................................................-0.3V to +45V
PV_ to GND..........................................................-0.3V to +6.0V
PV_ to GND..........................................................-0.3V to +6.0V
PV2 to GND, PV2 to PGND2................................-0.3V to +6.0V
PV3 to GND, PV3 to PGND3................................-0.3V to +6.0V
PGND2–PGND3 to GND......................................-0.3V to +0.3V
LX1 to GND................................................-6.0V to VSUP + 6.0V
BST1 to LX1..........................................................-0.3V to +6.0V
DH1 to LX1 ................................................-0.3V to BST1 + 0.3V
BIAS to GND.........................................................-0.3V to +6.0V
DL1 to GND..................................................-0.3V to PV1 + 0.3V
LX2 to PGND2.............................................-0.3V to PV2 + 0.3V
LX3 to PGND3.............................................-0.3V to PV3 + 0.3V
OUT1, CS1, OUT2, OUT3 to GND.......................-0.3V to +6.0V
FB1, EN2, EN3 to GND........................................-0.3V to +6.0V
RESET_, ERR to GND..........................................-0.3V to +6.0V
CS1 to OUT1.........................................................-0.3V to +0.3V
CSEL1, SYNC, SSEN to GND..............................-0.3V to +6.0V
COMP1 to GND..............................................-0.3V to PV + 0.3V
LX2, LX3 Output Short-Circuit Duration.....................Continuous
Continuous Power Dissipation (TA = +70ºC)
Side-Wettable TQFN
(derate 27mW/ºC above +70ºC)................................2160mW
Operating Temperature Range...........................-40ºC to +125°C
Junction Temperature.......................................................+150°C
Storage Temperature Range..............................-65ºC to +150°C
Lead Temperature (soldering, 10s).................................. +300°C
Soldering Temperature (reflow)........................................+260°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.
Package Thermal Characteristics (Note 1)
Side-Wettable TQFN
Junction-to-Ambient Thermal Resistance (θJA).......... 37°C/W
Junction-to-Case Thermal Resistance (θJC)................. 2.8°C/W
Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer
board. For detailed information on package thermal considerations, refer to www.maximintegrated.com/thermal-tutorial.
http://www.DataSheet4U.net/
Electrical Characteristics
(VSUP = 14V, VPV1 = VBIAS, VPV2 = VPV3 = VOUT1; TA = TJ = -40°C to +125°C, unless otherwise noted. Typical values are at
TA = +25°C under normal conditions, unless otherwise noted.) (Note 2)
PARAMETER
Supply Voltage Startup
Threshold
Supply Voltage Range
Supply Current
Oscillator Frequency
SYNC Input Frequency
Range
Spread-Spectrum Range
BIAS Regulator Voltage
PV_ POR
SYMBOL
CONDITIONS
VSUP,STARTUP VSUP rising
VSUP
ISUP
fSW
Normal operation, after Buck 1 startup
VEN1 = VEN2 = VEN3 = 0V
VEN1 = 5V, VEN2 = VEN3 = 0V (no load)
VBIAS
VSSEN = VGND
VSSEN = VBIAS
6V ≤ VSUP ≤ 42V, no switchover
VBIAS falling
Hysteresis
MIN
4.25
3.5
2.0
1.7
4.6
2.5
TYP
4.5
4
20
2.1
0
+6
5.0
2.7
0.45
MAX
4.75
36
15
40
2.2
2.4
UNITS
V
V
µA
MHz
MHz
%
5.4 V
2.9
V
www.maximintegrated.com
Maxim Integrated 2



No Preview Available !

MAX16993
Step-Down Controller with
Dual 2.1MHz Step-Down DC-DC Converters
Electrical Characteristics (continued)
(VSUP = 14V, VPV1 = VBIAS, VPV2 = VPV3 = VOUT1; TA = TJ = -40°C to +125°C, unless otherwise noted. Typical values are at
TA = +25°C under normal conditions, unless otherwise noted.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
OUT1: HIGH-VOLTAGE SYNCHRONOUS STEP-DOWN DC-DC CONTROLLER
VCSEL1 = VGND
VCSEL1 = VBIAS
(factory option)
OUT1 Switching Frequency
fSW1
Internally generated
(see the Selector
Guide)
VCSEL1 = VBIAS
(factory option)
VCSEL1 = VBIAS
(factory option)
VCSEL1 = VBIAS
(factory option)
Voltage
FB1 Regulation Voltage
Error Amplifier
Transconductance
VOUT1
gMEA
VFB1 = VGND
Fixed option
(see the Selector
Guide)
VFB1 = VBIAS
(factory option)
VFB1 = VBIAS
(factory option)
Adjustable option (see the Selector Guide)
http://www.DataSheet4U.net/
Voltage Accuracy
VOUT1
5.5V ≤ VSUP ≤ 18V, 0 < VLIM1 < 75mV,
PWM mode
MIN
0.985
300
-2.0
TYP
2100
1050
525
420
350
3.3
5.0
3.15
1.0
700
MAX UNITS
kHz
V
1.019
1200
+2.5
V
µS
%
DC Load Regulation
DC Line Regulation
OUT1 Discharge Resistance
High-Side Output Drive
Resistance
Low-Side Output Drive
Resistance
Output Current-Limit
Threshold
Skip Current Threshold
Soft-Start Ramp Time
VLIM1
ISKIP
PWM mode
PWM mode
VEN1 = VGND or VSUP
VDH1 rising, IDH1 = 100mA
VDH1 falling, IDH1 = 100mA
VDL1 rising, IDL1 = 100mA
VDL1 falling, IDL1 = 100mA
CSI – OUT1
CS1 – OUT1, no load
0.02
0.03
100
2
1
2.5
1.5
200
4
4
5
3
100 120 150
10 35 60
4
%/A
%/V
mV
mV
ms
LX_ Leakage Current
Duty-Cycle Range
Minimum On-Time
OUT1 OV Threshold
VLX1 = VSUP
PWM mode
0.01
97.2
60 75
107 110 113
µA
%
ns
%
www.maximintegrated.com
Maxim Integrated 3



No Preview Available !

MAX16993
Step-Down Controller with
Dual 2.1MHz Step-Down DC-DC Converters
Electrical Characteristics (continued)
(VSUP = 14V, VPV1 = VBIAS, VPV2 = VPV3 = VOUT1; TA = TJ = -40°C to +125°C, unless otherwise noted. Typical values are at
TA = +25°C under normal conditions, unless otherwise noted.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX
OUT2 AND OUT3: LOW-VOLTAGE SYNCHRONOUS STEP-DOWN DC-DC CONVERTERS
Supply Voltage Range
Supply Current
VSUP
IPV_
VEN_ = 5V, no load
2.7 5.5
0.1 5
Skip Mode Peak Current
Voltage Accuracy
Feedback-Voltage Accuracy
Load Regulation
LX_ On-Resistance High
LX_ On-Resistance Low
Current-Limit Threshold
LX_ Rise/Fall Time
VOUT
ILMAX
0A ≤ ILOAD ≤ IMAX, PWM mode
Adjustable mode, IOUT2 = 0mA
0A ≤ ILOAD ≤ IMAX (PWM mode)
ILX_ = -800mA
ILX_ = 800mA
IMAX = 3.0A option (see the Selector Guide)
IMAX = 1.5A option (see the Selector Guide)
PV2 = PV3 = 3.3V, IOUT_ = 2A
0.2 x ILMAX
-3.0 +3.0
0.806 0.815 0.824
-1.5 -1.0
70 110
50 90
5.0 5.6
2.5 3.0
4
Soft-Start Ramp Time
2.5
LX_ Leakage Current
0.01
Duty-Cycle Range
PWM mode
http://www.DataSheet4U.net/
15 100
LX_ Discharge Resistance
22 48
RESET_
Reset Threshold
OUT1 Active Timeout Period
OUT2, OUT3 Active
Timeout Period
Rising (relative to nominal output voltage)
92
95
98
Falling (relative to nominal output voltage)
90
92
95
See the Selector Guide
(16,384 clocks)
7.8
See the Selector Guide
(8192 clocks)
3.9
See the Selector Guide
(4096 clocks)
1.9
See the Selector Guide
(256 clocks)
0.1
See the Selector Guide
(16,384 clocks)
See the Selector Guide
(8192 clocks)
See the Selector Guide
(4096 clocks)
See the Selector Guide
(256 clocks)
7.8
3.9
1.9
0.1
Output Low Level
Propagation Time
ISINK = 3mA
OUT1, 5% below threshold
OUT2/OUT3, 5% below threshold
0.1 0.2
5 10 20
248
UNITS
V
µA
mA
%/A
mΩ
mΩ
A
ns
ms
µA
%
%
ms
ms
V
µs
µs
www.maximintegrated.com
Maxim Integrated 4




MAX16993 datasheet pdf
Download PDF
MAX16993 pdf
View PDF for Mobile


Similiar Datasheets : MAX16903 MAX16904 MAX16910 MAX16913 MAX16913A MAX16914 MAX16915 MAX1692 MAX16920 MAX16922 MAX16928 MAX16929 MAX1693 MAX16930 MAX16931 MAX16936 MAX1694 MAX16963 MAX1697 MAX1698 MAX1698A MAX16990 MAX16992 MAX16993 MAX16997 MAX16998 MAX16999

Index :   0   1   2   3   4   5   6   7   8   9   A   B   C   D   E   F   G   H   I   J   K   L   M   N   O   P   Q   R   S   T   U   V   W   X   Y   Z   

This is a individually operated, non profit site. If this site is good enough to show, please introduce this site to others.
Since 2010   ::   HOME   ::   Privacy Policy + Contact