High-Speed, Digitally Adjusted
Step-Down Controllers for Notebook CPUs
MAX1710/MAX1711
ABSOLUTE MAXIMUM RATINGS
LX to BST..................................................................-6V to +0.3V
V+ to GND ..............................................................-0.3V to +30V
REF Short Circuit to GND ...........................................Continuous
V
CC
, V
DD
to GND .....................................................-0.3V to +6V
PGND to GND.....................................................................±0.3V
Continuous Power Dissipation (T
A
= +70°C)
SHDN,
PGOOD to GND ...........................................-0.3V to +6V
24-Pin QSOP (derate 9.5mW/°C above +70°C)..........762mW
OVP,
ILIM, FB, FBS, CC, REF, D0–D4,
Operating Temperature Range ...........................-40°C to +85°C
GNDS, TON to GND ..............................-0.3V to (V
CC
+ 0.3V)
Junction Temperature ......................................................+150°C
SKIP
to GND (Note 1).................................-0.3V to (V
CC
+ 0.3V)
Storage Temperature Range .............................-65°C to +165°C
DL to PGND................................................-0.3V to (V
DD
+ 0.3V)
Lead Temperature (soldering, 10sec) .............................+300°C
BST to GND ............................................................-0.3V to +36V
DH to LX .....................................................-0.3V to (BST + 0.3V)
Note 1:
SKIP
may be forced below -0.3V, temporarily exceeding the absolute maximum rating, for the purpose of debugging proto-
type breadboards using the no-fault test mode. Limit the current drawn to -5mA maximum.
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(Circuit of Figure 1, V
BATT
= 15V, V
CC
= V
DD
= 5V,
SKIP
= GND,
T
A
=
0°C to +85°C,
unless otherwise noted.)
PARAMETER
Input Voltage Range
Battery voltage, V+
V
CC,
V
DD
DAC codes from 1.3V to 2V
V
BATT
= 4.5V to 28V, includes
DAC codes from 0.925V
load regulation error
to 1.275V
I
LOAD
= 0 to 7A
FB-FBS or GNDS-GND = 0 to 25mV
V
CC
= 4.5V to 5.5V, V
BATT
= 4.5V to 28V
FB (MAX1710 only) or FBS
-0.2
130
-1
Rising edge of
SHDN
to full I
LIM
TON = GND (550kHz)
On-Time
V
BATT
= 24V, TON = REF (400kHz)
FB = 2V
TON = open (300kHz)
(Note 2)
TON = V
CC
(200kHz)
(Note 2)
Measured at V
CC
, FB forced above the regulation point
Measured at V
DD
, FB forced above the regulation point
SHDN
= 0
SHDN
= 0
SHDN
= 0, measured at V+ = 28V, V
CC
= V
DD
= 0 or 5V
V
CC
= 4.5V to 5.5V, no external REF load
I
REF
= 0 to 50µA
REF in regulation
Falling edge, hysteresis = 40mV
10
1.6
1.98
140
175
260
380
1.7
160
200
290
425
400
600
<1
25
<1
<1
<1
2
180
225
320
470
500
950
5
40
5
5
5
2.02
0.01
ns
µA
µA
µA
µA
µA
µA
V
V
µA
V
ns
180
CONDITIONS
MIN
2
4.5
-1
-1.2
9
3
5
0.2
240
1
TYP
MAX
28
5.5
1
1.2
%
mV
mV
mV
µA
kΩ
µA
ms
UNIT
V
DC Output Voltage Accuracy
Load Regulation Error
Remote Sense Voltage Error
Line Regulation Error
FB Input Bias Current
FB Input Resistance (MAX1711)
GNDS Input Bias Current
Soft-Start Ramp Time
Minimum Off-Time
Quiescent Supply Current (V
CC
)
Quiescent Supply Current (V
DD
)
Shutdown Supply Current (V
CC
)
Shutdown Supply Current (V
DD
)
Shutdown Battery Supply
Current
Reference Voltage
Reference Load Regulation
REF Sink Current
REF Fault Lockout Voltage
2
Quiescent Battery Supply Current Measured at V+
_______________________________________________________________________________________
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
