MAX16922AUPE/V+ Maxim Integrated Products, MAX16922AUPE/V+ Datasheet

IC DCDC CONV STPDN LDO 20TSSOP

MAX16922AUPE/V+

Manufacturer Part Number
MAX16922AUPE/V+
Description
IC DCDC CONV STPDN LDO 20TSSOP
Manufacturer
Maxim Integrated Products
Datasheet
1.MAX16922ATPAVT.pdf (17 pages)

Specifications of MAX16922AUPE/V+

Applications
General Purpose
Current - Supply
5µA
Voltage - Supply
3.7 V ~ 28 V
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
20-TSSOP Exposed Pad, 20-eTSSOP, 20-HTSSOP
Output Voltage
1.8 V, 2.5 V, 3.3 V, 5 V
Output Current
450 mA, 600 mA, 1.2 A
Switching Frequency
2.2 MHz
Input / Supply Voltage (max)
28 V
Input / Supply Voltage (min)
3.7 V
Maximum Operating Temperature
+ 125 C
Mounting Style
SMD/SMT
Duty Cycle (max)
100 %
Load Regulation
+/- 0.2 %
Minimum Operating Temperature
- 40 C
Number Of Outputs
4
Operating Temperature Range
- 40 C to + 125 C
Supply Current
14 uA
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
The MAX16922 power-management integrated circuit
(PMIC) is designed for medium power-level automotive
applications and integrates multiple supplies in a small
footprint. The device includes one high-voltage step-
down converter (OUT1) and three low-voltage cascad-
ed DC-DC converters (OUT2, OUT3, OUT4). OUT1 and
OUT2 are step-down DC-DC converters, and OUT3/
OUT4 are linear regulators. The device also includes a
reset output (RESET) and a high-voltage-compatible
enable input (EN).
The 1.2A output high-efficiency, step-down DC-DC con-
verter (OUT1) operates from a voltage up to 28V contin-
uous and is protected from load-dump transients up to
45V. The 600mA output high-efficiency step-down DC-
DC converter (OUT2) runs from a voltage up to 5.5V.
The two 300mA LDO linear regulators offer low dropout
of only 130mV (typ). The power-good RESET output
provides voltage monitoring for OUT1 and OUT2.
OUT1 and OUT2 use fast 2.2MHz PWM switching and
small external components. The high-voltage converter
(OUT1) enters skip mode automatically under light
loads to prevent an overvoltage condition from occur-
ring at the output. The low-voltage synchronous DC-DC
converter (OUT2) can operate in forced-PWM mode to
prevent any AM band interference or high-efficiency
auto-PWM mode.
The MAX16922 includes overtemperature shutdown
and overcurrent limiting. The device is designed to
operate from -40°C to +125°C ambient temperature.
19-5039; Rev 3; 11/10
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
________________________________________________________________ Maxim Integrated Products
General Description
V
4.7μF
4.7μF
OUT2
V
V
OUT1
PV1
V
V
Converters, Dual LDOs, and RESET
OUT3
OUT4
4.7μF
4.7μF
4.7μF
2.2MHz, Dual, Step-Down DC-DC
PV1
EN
PWM
PV3
OUT3
GND1
GND3
PV4
OUT4
GND
GND2
MAX16922
EP
♦ 1.2A High-Efficiency 2.2MHz DC-DC Converter
♦ 600mA High-Efficiency 2.2MHz DC-DC Converter
♦ LDO Linear Regulators
♦ Enable Input
♦ RESET Output Monitoring on OUT1 and OUT2
♦ Overtemperature and Short-Circuit Protection
♦ Available in
* Insert the desired suffix letters (from the Selector Guide) into
the blank “_” to complete the part number.
+ Denotes a lead(Pb)-free/RoHS-compliant package.
/V denotes an automotive qualified part.
** EP = Exposed pad.
MAX16922ATP_ /V+*
MAX16922AUP_ /V+*
PGND2
OUTS2
OUTS1
RESET
LSUP
PV2
BST
LX2
LX1
3.7V to 28V Operating Supply Voltage
45V Load-Dump Protection
Output Voltage: 3.0V to 5.5V
2.7V to 5.5V Supply Voltage
Output Voltage: 1.0V to 3.9V
180° Out-of-Phase Operation
Forced-PWM and Auto-PWM Modes
OUT3: 1.0V to 4.15V at 300mA
OUT4: 1.0V to 4.15V at 300mA
Separate Inputs for Increased Efficiency
5mm x 5mm x 0.8mm, 20-Pin TQFN-EP
4.5mm x 6.5mm, 20-Pin TSSOP-EP
PART
0.1μF
1μF
2.2μH
Typical Operating Circuit
4.7μH
4.7μF
V
Ordering Information
OUT1
-40°C to +125°C
-40°C to +125°C
TEMP RANGE
20kΩ
10μF
V
OUT2
10μF
V
OUT1
PIN-PACKAGE
20 TQFN-EP**
20 TSSOP-EP**
Features
1

Related parts for MAX16922AUPE/V+

Image
Part Number
Description
Manufacturer
Datasheet
Request R
MAX7528KCWP
Part Number:
MAX7528KCWP
Description:
MAX7528KCWPMaxim Integrated Products [CMOS Dual 8-Bit Buffered Multiplying DACs]
Manufacturer:
Maxim Integrated Products
Datasheet:
MAX7528KCWP.pdf (12 pages)
MAX3261CCJ
Part Number:
MAX3261CCJ
Description:
Single +5V, fully integrated, 1.25Gbps laser diode driver.
Manufacturer:
Maxim Integrated Products
Datasheet:
MAX3261CCJ.pdf (12 pages)
MAX3263CAG
Part Number:
MAX3263CAG
Description:
Single +5V, fully integrated, 155Mbps laser diode driver.
Manufacturer:
Maxim Integrated Products
Datasheet:
MAX3263CAG.pdf (12 pages)
MAX8809AETL+
Part Number:
MAX8809AETL+
Description:
VRD11/VRD10, K8 Rev F 2/3/4-Phase PWM Controllers with Integrated Dual MOSFET Drivers
Manufacturer:
Maxim Integrated Products
Datasheet:
MAX8809AETL.pdf (50 pages)
MAX1535CETJ+T
Part Number:
MAX1535CETJ+T
Description:
Highly Integrated Level 2 SMBus Battery Chargers
Manufacturer:
Maxim Integrated Products
Datasheet:
MAX1535CETJT.pdf (39 pages)
DS2741N+
Part Number:
DS2741N+
Description:
Current Monitor and Accumulator with Integrated Sense Resistor; ; Temperature Range: -40°C to +85°C
Manufacturer:
Maxim Integrated Products
MAX13450EAUD+T
Part Number:
MAX13450EAUD+T
Description:
TSSOP 14/A°/RS-485 Transceivers with Integrated 100O/120O Termination Resis
Manufacturer:
Maxim Integrated Products
MAX13451EAUD+T
Part Number:
MAX13451EAUD+T
Description:
TSSOP 14/A°/RS-485 Transceivers with Integrated 100O/120O Termination Resis
Manufacturer:
Maxim Integrated Products
MAX17497BATE+
Part Number:
MAX17497BATE+
Description:
QFN 16/A°/AC-DC and DC-DC Peak-Current-Mode Converters with Integrated Step
Manufacturer:
Maxim Integrated Products
MAX17502FATB+T
Part Number:
MAX17502FATB+T
Description:
TDFN/A/65V, 1A, 600KHZ, SYNCHRONOUS STEP-DOWN REGULATOR WITH INTEGRATED SWI
Manufacturer:
Maxim Integrated Products
MAX1978EVKIT
Part Number:
MAX1978EVKIT
Description:
Integrated Temperature Controller f
Manufacturer:
Maxim Integrated Products
MAX2606EUT+
Part Number:
MAX2606EUT+
Description:
SOT23-6/I°/45MHz to 650MHz, Integrated IF VCOs with Differential Output
Manufacturer:
Maxim Integrated Products
MAX2608EUT+
Part Number:
MAX2608EUT+
Description:
SOT23-6/I°/45MHz to 650MHz, Integrated IF VCOs with Differential Output
Manufacturer:
Maxim Integrated Products
MAX2831EVKIT+
Part Number:
MAX2831EVKIT+
Description:
EVALUATION KIT/2.4GHZ TO 2.5GHZ 802.11G/B RF TRANSCEIVER WITH INTEGRATED PA
Manufacturer:
Maxim Integrated Products
MAX4888CETI+
Part Number:
MAX4888CETI+
Description:
QFN/E/DUAL PCIE/SATA HIGH SPEED SWITCH WITH INTEGRATED BIAS RESISTOR
Manufacturer:
Maxim Integrated Products
Datasheet:
MAX4888BETI.pdf (10 pages)

MAX16922AUPE/V+ Summary of contents

Page 1

... OUT2 4.7μF V OUT4 4.7μF ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. 2.2MHz, Dual, Step-Down DC-DC ♦ 1.2A High-Efficiency 2.2MHz DC-DC Converter 3.7V to 28V Operating Supply Voltage 45V Load-Dump Protection Output Voltage: 3 ...

Page 2

Dual, Step-Down DC-DC Converters, Dual LDOs, and RESET ABSOLUTE MAXIMUM RATINGS PV1 GND .....................................................-0.3V to +45V LX1 to GND.................................................-0.5V to (PV1 + 0.3V) LX2 to GND.................................................-0.5V to (PV2 + 0.3V) BST to LX1.............................................................-0.3V to +6.0V PV2, PV3, ...

Page 3

Converters, Dual LDOs, and RESET ELECTRICAL CHARACTERISTICS (continued 13.5V PV1 PV2 PV3 OUT1 T = +25°C under normal conditions, unless otherwise noted.) (Note 2) A PARAMETER SYMBOL OUTS1 Discharge Resistance OUT2—SYNCHRONOUS ...

Page 4

Dual, Step-Down DC-DC Converters, Dual LDOs, and RESET ELECTRICAL CHARACTERISTICS (continued 13.5V PV1 PV2 PV3 OUT1 T = +25°C under normal conditions, unless otherwise noted.) (Note 2) A PARAMETER SYMBOL ...

Page 5

Converters, Dual LDOs, and RESET (V = 13.5V PV1 PV2 PV3 OUT1 PV4 OUT1 EFFICIENCY vs. LOAD CURRENT 100 90 80 PV1 = 8V 70 PV1 = 13.5V 60 PV1 = 18V 50 ...

Page 6

Dual, Step-Down DC-DC Converters, Dual LDOs, and RESET (V = 13.5V PV1 PV2 PV3 OUT1 SWITCHING FREQUENCY vs. LOAD CURRENT 2.0 1.6 1.2 0.8 0 200 400 600 800 1000 ...

Page 7

Converters, Dual LDOs, and RESET (V = 13.5V PV1 PV2 PV3 OUT1 PV4 SWITCHING FREQUENCY vs. TEMPERATURE 2.30 2.28 2.26 2.24 2.22 2.20 2.18 2.16 2.14 2.12 2.10 -40 -25 - ...

Page 8

Dual, Step-Down DC-DC Converters, Dual LDOs, and RESET V OUT1 20kΩ RESET GENERATION GND1 LDO REG 1: 300mA PV3 V OUT1 4.7μF OUT3 1.0V TO 4.15V 4.7μF GND2 PWM MODE SELECT LDO REG 2: 300mA PV4 V OUT2 4.7μF ...

Page 9

Converters, Dual LDOs, and RESET TOP VIEW 16 PV4 17 LSUP MAX16922 18 RESET 19 GND1 THIN QFN PIN NAME TQFN TSSOP 1 3 BST Bootstrap Capacitor Input. Connect a 0.1µF ceramic capacitor from BST to LX1. ...

Page 10

Dual, Step-Down DC-DC Converters, Dual LDOs, and RESET PIN NAME TQFN TSSOP 8 10 OUTS2 9 11 PGND2 10 12 LX2 11 13 PV2 12 14 PV3 13 15 OUT3 14 16 GND2 15 17 OUT4 16 18 PV4 ...

Page 11

Converters, Dual LDOs, and RESET Detailed Description The MAX16922 PMIC is designed for medium power level automotive applications requiring multiple sup- plies in a small footprint. As shown in the Typical Applications Circuit , the MAX16922 integrates one high-voltage power ...

Page 12

Dual, Step-Down DC-DC Converters, Dual LDOs, and RESET The MAX16922 limits the peak inductor current sourced by the p-channel MOSFET. When the peak current limit is reached, the internal p-channel MOSFET turns off for the remainder of the cycle. ...

Page 13

Converters, Dual LDOs, and RESET VBAT 0.1μF Applications Information Power-On Sequence When the EN input is pulled high and PV1 is greater than 3.7V (typ), the 5V LSUP linear regulator turns on. Once LSUP exceeds 2.5V, the internal reference and ...

Page 14

Dual, Step-Down DC-DC Converters, Dual LDOs, and RESET Capacitor Selection The input capacitor, CIN1, reduces the current peaks drawn from the supply and reduces switching noise in the MAX16922. The impedance of CIN1 at the switch- ing frequency should ...

Page 15

Converters, Dual LDOs, and RESET High-switching frequencies and relatively large peak currents make PCB layout a very important aspect of design. Good design minimizes excessive EMI on the feedback paths and voltage gradients in the ground plane, both of which ...

Page 16

Dual, Step-Down DC-DC Converters, Dual LDOs, and RESET Chip Information PROCESS: BiCMOS 16 ______________________________________________________________________________________ Package Information For the latest package outline information and land patterns www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the package code ...

Page 17

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 17 © 2010 Maxim Integrated Products 2 ...

Related keywords