19-5779; Rev 0; 3/11
E V A L U A T I O N K I T A V A I L A B L E
MAX16907
36V, 2.2MHz Step-Down Converter
with Low Operating Current
General Description
Features
The MAX16907 is a 3A, current-mode, step-down con-
verter with an integrated high-side switch. The device is
designed to operate with input voltages from 3.5V to 36V
while using only 30FA quiescent current at no load. The
switching frequency is adjustable from 1MHz to 2.2MHz
by an external resistor and can be synchronized to an
external clock. The output voltage is pin selectable to
be 5V fixed or adjustable from 1V to 10V. The wide input
voltage range along with its ability to operate at high duty
cycle during undervoltage transients make the device
ideal for automotive and industrial applications.
S Wide 3.5V to 36V Input Voltage Range
S 42V Input Transients Tolerance
S High Duty Cycle During Undervoltage Transients
S 5V Fixed or 1V to 10V Adjustable Output Voltage
S Integrated 3A Internal High-Side (70mI typ)
Switch
S Fast Load-Transient Response and Current-Mode
Architecture
S Adjustable Switching Frequency (1MHz to 2.2MHz)
S Frequency Synchronization Input
S 30µA Standby Mode Operating Current
S 5µA Typical Shutdown Current
The device operates in skip mode for reduced current
consumption in light-load applications. Protection fea-
tures include overcurrent limit, overvoltage, and thermal
shutdown with automatic recovery. The device also
features a power-good monitor to ease power-supply
sequencing.
S Spread Spectrum (Optional)
S Overvoltage, Undervoltage, Overtemperature, and
Short-Circuit Protections
The device operates over the -40NC to +125NC automo-
tive temperature range, and is available in 16-pin TSSOP
and TQFN (5mm x 5mm) packages with exposed pads.
Ordering Information appears at end of data sheet.
Applications
Automotive
For related parts and recommended products to use with this part,
refer to: www.maxim-ic.com/MAX16907.related
Industrial/Military
High-Voltage Input DC-DC Converter
Point-of-Load Applications
Typical Application Circuit
V
BAT
C
47µF
C
IN2
4.7µF
IN1
C
BST
0.1µF
SUP
SUPSW
BST
L1
2.2µH
V
EN
OUT
5V AT 3A
LX
FSYNC
V
C
22µF
OUT
OUT
D1
MAX16907
OUT
COMP
C
COMP1
V
BIAS
R
FOSC
1000pF
C
COMP2
12pF
12kI
V
BIAS
R
COMP
20kI
FOSC
BIAS
FB
R
PGOOD
10kI
PGOOD
POWER GOOD
C
BIAS
1µF
GND
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1
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.