Rainbow Electronics MAX16904 - Manual

General Description
The MAX16904 is a small, synchronous buck converter
with integrated high-side and low-side switches. The
device is designed to deliver 600mA with input voltages
from +3.5V to +28V while using only 25µA quiescent
current at no load. Voltage quality can be monitored by
observing the PGOOD signal. The MAX16904 can oper-
ate in dropout by running at 97% duty cycle, making it
ideal for automotive and industrial applications.
The MAX16904 operates at a 2.1MHz frequency, allow-
ing for small external components and reduced output
ripple. It guarantees no AM band interference. SYNC
input programmability enables three frequency modes
for optimized performance: forced fixed-frequency
operation, SKIP mode (ultra-low quiescent current of
25µA), and synchronization to an external clock. The
MAX16904 can be ordered with spread-spectrum fre-
quency modulation, designed to minimize EMI-radiated
emissions due to the modulation frequency.
The MAX16904 is available in a thermally enhanced,
3mm x 3mm, 10-pin TDFN package or a 16-pin TSSOP
package. The MAX16904 operates over the -40°C to
+125°C automotive temperature range.
Applications
Automotive
Industrial
Military
High-Voltage Input-Power DC-DC Applications
Features
♦ Wide +3.5V to +28V Input Voltage Range
♦ Tolerates Input Voltage Transients to +42V
♦ 600mA Minimum Output Current with Overcurrent
Protection
♦ Fixed Output Voltages (+3.3V and +5V)
♦ 2.1MHz Switching Frequency with Three Modes of
Operation
25µA Ultra-Low Quiescent Current SKIP Mode
Forced Fixed-Frequency Operation
External Frequency Synchronization
♦ Optional Spread-Spectrum Frequency Modulation
♦ Power-Good Output
♦ Enable-Pin Compatible from +3.3V Logic Level to
+42V
♦ Thermal Shutdown Protection
♦ -40°C to +125°C Automotive Temperature Range
♦ 10-Pin TDFN-EP or 16-Pin TSSOP-EP Packages
♦ AEC-Q100 Qualified
MAX16904
2.1MHz, High-Voltage,
600mA Mini-Buck Converter
________________________________________________________________ Maxim Integrated Products 1
19-5481; Rev 1; 11/10
EVALUATION KIT
AVAILABLE
PART
SPREAD
SPECTRUM
TEMP
RANGE
PIN-
PACKAGE
MAX16904RATB__/V+ Disabled
-40°C to
+125°C
10 TDFN-EP*
MAX16904RAUE__/V+ Disabled
-40°C to
+125°C
16 TSSOP-EP*
MAX16904SATB__/V+ Enabled
-40°C to
+125°C
10 TDFN-EP*
MAX16904SAUE__/V+ Enabled
-40°C to
+125°C
16 TSSOP-EP*
Ordering Information
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.
Note: Insert the desired suffix letters (from Selector Guide) into
the blanks to indicate the output voltage. Alternative output volt-
ages available upon request.
+
Denotes a lead(Pb)-free/RoHS-compliant package.
/V denotes an automotive qualified part.
*
EP = Exposed pad.
Selector Guide appears at end of data sheet.