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PDF MAX16993 Data sheet ( Hoja de datos )
| Número de pieza | MAX16993 | |
| Descripción | Step-Down Controller | |
| Fabricantes | Maxim Integrated Products | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de MAX16993 (archivo pdf) en la parte inferior de esta página. Total 25 Páginas | ||
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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
1 page  
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
ERR
Output Low Level
THERMAL OVERLOAD
ISINK = 3mA
0.1
Thermal-Warning
Temperature
+150
Thermal-Shutdown
Temperature
+170
Thermal-Shutdown
Hysteresis
15
ENABLE INPUTS (EN_)
Input High
Hysteresis
VEN_ rising
1.6 1.8
0.2
EN Input Current
SYNCHRONIZATION I/O (SYNC)
VEN_ = 5V
0.5 1.0
Input High
SYNC input option
(see the Selector Guide)http://www.DataSheet4U.net/
1.8
Input Low
Input Current
SYNC input option
(see the Selector Guide)
SYNC input option (see the Selector
Guide); VSYNC = 5V
50
Output High Level
Output Low Level
Pulldown Resistance
SYNC output option
(see the Selector Guide); VPV = 5V,
ISINK = 1mA
SYNC output option (see the Selector
Guide); ISINK = 1mA
4.9 4.98
0.02
100
LOGIC INPUTS (CSEL1, SSEN)
Input High
1.4
Input Low
Input Current
TA = +25°C
Note 2: All units are 100% production tested at TA = +25°C. All temperature limits are guaranteed by design.
Note 3: Guaranteed by design. Not production tested.
MAX
0.2
2.0
2.0
0.8
80
0.1
0.5
2
UNITS
V
°C
°C
°C
V
V
µA
V
V
µA
V
V
kΩ
V
V
µA
www.maximintegrated.com
Maxim Integrated │ 5
5 Page 
MAX16993
Step-Down Controller with
Dual 2.1MHz Step-Down DC-DC Converters
Typical Operating Circuit
VOUT1
VBATP
BIAS
LINEAR
GND REGULATOR
BST1
VSUP
DH1
N
LX1
DL1
N
GND STEP-DOWN
CONTROLLER
OUT1
CS1
OUT1
FB1
COMP1
http://www.DataSheet4U.net/
PWM
EN
MAX16993
PV1
BIAS
PV
STEP-DOWN
PWM
OUT3
0.8V TO 3.95V
1.5A TO 3.0A
PWM
EN
PV3
P
LX3
N
PGND3
OUT3
VOUT1
VOUT3
RESET1
RESET2
RESET3
EN1
EN2
EN3
ERR
SSEN
CSEL1
SYNC
POR
GENERATION
AND
CONTROL
STEP-DOWN
PWM
OUT2
0.8V TO 3.95V
1.5A TO 3.0A
PWM
EN
PV2
P
LX2
N
PGND2
OUT2
VOUT1
VOUT2
EP
www.maximintegrated.com
Maxim Integrated │ 11
11 Page | ||
| Páginas | Total 25 Páginas | |
| PDF Descargar | [ Datasheet MAX16993.PDF ] | |
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