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PDF MAX14900E Data sheet ( Hoja de datos )
| Número de pieza | MAX14900E | |
| Descripción | Octal Power Switch | |
| Fabricantes | Maxim Integrated | |
| Logotipo |  |
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MAX14900E
EVALUATION KIT AVAILABLE
Octal, High-Speed, Industrial, High-Side Switch
General Description
The MAX14900E is an octal power switch that
features per-channel configuration for high-side or push-
pull operation. Low propagation delay, high-rate load-
switching makes the device suitable for next-generation
high-speed PLC systems. Each high-side switch sources
850mA continuous current with a low 165mΩ (max)
on-resistance at 500mA at TA = +125°C. The high-side
switches feature 2µs (max) input-to-output propagation
delay when driving resistive loads. Long cables can be
driven with switching rates of up to 100kHz for PWM/PPO
control in push-pull operation. Multiple high-side switches
can be connected in parallel to achieve higher drive
currents. The device features a wide supply input range
of 10V to 36V.
The MAX14900E is configured, monitored, and driven by
an SPI and/or parallel interface. In parallel mode, eight
logic inputs directly control the outputs and the serial
interface can be used for configuration/monitoring. Serial
mode utilizes the serial interface for both setting and
configuration, and features CRC error detection to ensure
robust SPI communication.
Current limiting and per-channel thermal shutdown
protect each switch/driver. The device features a global
diagnostics output as well as per-channel diagnostics and
monitoring through the serial interface.
The MAX14900E is available in a 48-pin (7mm x 7mm)
QFN-EP or standard 48-pin TQFN-EP package, and is
specified over the -40°C to +125°C temperature range.
Applications
●● Programmable Logic Controllers
●● High-Density Digital Output Modules
●● Motor Controllers
●● PWM/PPO Control
Ordering Information and Typical Operating Circuit appear
at end of data sheet.
Benefits and Features
●● Low Power for High-Density Modules
• 3mA (max) Total Supply Current
• 165mΩ (max) High-Side RON at +125°C
●● Fast Switching Ideal for Accurate, High-Speed
Control Systems
• 2µs Propagation Delays (High-Side Mode)
• 0.8µs Propagation Delays (Push-Pull Mode)
• 100kHz (max) Push-Pull Mode Switching Rate
●● Extensive Fault Feedback Eases Maintenance and
Reduces Installation Time
• Global and Per-Channel Diagnostics
• Open Load/Wire Detection
• Thermal Shutdown Fault Indication
• Output Logic State Feedback
• Undervoltage Lockout
●● Small Packages with Serial Interface Allows Making
High-Density Modules
• Daisy-Chainable SPI Minimizes Isolation Cost
• 7mm x 7mm, 48-Pin QFN and TQFN Packages
Functional Diagram
VL V5
VDD
FLTR
VL V5
VDD
VDD
PUSHPL
OL/IN1
UV MONITOR
DRIVE + MONITOR O8
EN
VDD
IN2
CRC/IN3
CERR/IN4
IN5
IN6
CNFG/IN7
PARALLEL
INTERFACE
MAX14900E
DRIVE + MONITOR O7
EN
VDD
DRIVE + MONITOR O6
EN
VDD
S16/IN8
SRIAL
CS
CLK
SDI
SDO
SERIAL
INTERFACE
CONFIG
AND
SETTING
DRIVE + MONITOR O5
EN
VDD
DRIVE + MONITOR O4
EN
VDD
DRIVE + MONITOR O3
EN
VDD
FAULT
REXT
EN
DIAGNOSTICS
OVERLOAD
OVERTEMP
OPEN LOAD
DRIVE + MONITOR O2
DRIVE + MONITOR O1
VDD
AGND
PGND
O8
O7
O6
O5
O4
O3
O2
O1
19-6563; Rev 4; 4/15
1 page  
MAX14900E
Octal, High-Speed, Industrial, High-Side Switch
Electrical Characteristics (continued)
(VDD = 10V to 36V, V5 = 4.5V to 5.5V, VL = 2.5V to 5.5V, TA = -40°C to +125°C, unless otherwise noted. Typical values are at VDD = 24V,
V5 = 5V, VL = 3.3V, and TA = +25°C.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
SPI TIMING CHARACTERISTICS (Figure 4)
CLK Clock Period
tCH+CL
50 ns
CLK Pulse-Width High
tCH
5 ns
CLK Pulse-Width Low
tCL
5 ns
FLTR = low (Note 4)
5
CS Fall-to-CLK Rise Time
tCSS
FLTR = high
ns
300
SDI Hold Time
tDH
5 ns
SDI Setup Time
tDS
5 ns
Output Data Propagation Delay
tDO CL = 10pF. CLK falling-edge to SDO stable
25 ns
SDO Rise and Fall Times
tFT CL = 10pF
4 ns
CS Hold Time
tCSH
(Note 4)
50 ns
FLTR = low (Note 4)
50
CS Pulse-Width High
tCSPW
FLTR = high
ns
280
PROTECTION SPECIFICATIONS
Channel Thermal-Shutdown
Threshold
TC_SD
Temperature rising
+170
°C
Thermal-Shutdown Hysteresis
Global Thermal-Shutdown
Threshold
TC_SD_HYS
TG_SD
Temperature rising
15 °C
150 °C
Global Thermal-Shutdown
Hysteresis
TG_SD_HYS
10 °C
ESD Protection
VESD
O_ pins, Human Body Model (Note 6)
All other pins, Human Body Model
±15
kV
±2
Note 2: All units are production tested at TA = +25°C. Specifications over temperature are guaranteed by design.
Note 3: All logic input pins except CS have a pulldown resistor. CS has a pullup resistor.
Note 4: Specifications are guaranteed by design; not production tested.
Note 5: Channel-to-channel skew is defined as the difference in propagation delays between channels on the same device with the
same polarity.
Note 6: Bypass VDD pins to AGND with a 1µF capacitor as close as possible to the device for high-ESD protection.
www.maximintegrated.com
Maxim Integrated │ 5
5 Page 
MAX14900E
Octal, High-Speed, Industrial, High-Side Switch
Pin Configurations
TOP VIEW
S16/IN8
CNFG/IN7
IN6
IN5
CS
CLK
SDI
SDO
CERR/IN4
CRC/IN3
IN2
OL/IN1
1
2
3
4
5
6
7
8
9
10
11
12
36 N.C.
35 N.C.
34 N.C.
33 N.C.
32 REXT
MAX14900E
31 EN
30 V5
29 AGND
28 FLTR
27 N.C.
EP* 26 N.C.
25 N.C.
36 35 34 33 32 31 30 29 28 27 26 25
SRIAL 37
24 PUSHPL
VDD 38
O5 39
23 VDD
22 O4
PGND 40
21 PGND
O6 41
20 O3
VDD 42
VDD 43
O7 44
MAX14900E
19 VDD
18 VDD
17 O2
PGND 45
16 PGND
O8 46
VDD 47
+
EP* 15 O1
14 VDD
FAULT 48
13 VL
1 2 3 4 5 6 7 8 9 10 11 12
QFN
7mm x 7mm
*CONNECT EP TO AGND.
TQFN
7mm x 7mm
Pin Description
PIN NAME
FUNCTION
16-Bit Serial-Select Input/IN8 Input. In serial mode (SRIAL = high), drive S16/IN8 high to select 16-bit
1
S16/IN8
serial operation. Drive S16/IN8 low to select 8-bit serial operation. In parallel mode (SRIAL = low), S16/IN8
sets the O8 output on/off in high-side mode or high/low in push-pull mode. S16/IN8 has an internal 200kΩ
pulldown resistor.
Configure Select Input/IN7 Input. In serial mode (SRIAL = high), drive CNFG/IN7 high to select per-
2
CNFG/IN7
channel configuration over the serial interface. Drive CNFG/IN7 low to select setting the O_ outputs over
the serial interface. In parallel mode (SRIAL = low), CNFG/IN7 sets the O7 output on/off in high-side mode
or high/low in push-pull mode. CNFG/IN7 has an internal 200kΩ pulldown resistor.
3
IN6
IN6 Input. In parallel mode (SRIAL = low), IN6 sets the O6 output on/off in high-side mode or high/low in
push-pull mode. IN6 has an internal 200kΩ pulldown resistor.
4
IN5
IN5 Input. In parallel mode (SRIAL = low), IN5 sets the O5 output on/off in high-side mode or high/low in
push-pull mode. IN5 has an internal 200kΩ pulldown resistor.
5 CS SPI Chip-Select Input. CS is the SPI active-low chip select. CS has an internal 200kΩ pullup resistor.
6
CLK
Serial-Clock Input. CLK is the SPI serial-clock input (up to 20MHz) and has an internal 200kΩ pulldown
resistor.
7 SDI Serial-Data Input. SDI is the SPI serial-data input and has an internal 200kΩ pulldown resistor.
8
SDO
Serial-Data Output. SDO is the SPI serial-data output. SDO has an internal 200kΩ pulldown resistor
when CS is logic-high.
www.maximintegrated.com
Maxim Integrated │ 11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet MAX14900E.PDF ] | |
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