19-4121; Rev 2; 6/09
KIT
ATION
EVALU
BLE
AVAILA
Quad-Output Controller for
Low-Power Architecture
General Description
Features
o
Fixed-Frequency, Current-Mode Controllers
o
5.5V to 28V Input Range (Step-Down) or 3V to 5V
Input Range (Step-Up)
o
1x Step-Up or Step-Down Controller
o
1x Internal 5A
P-P
Step-Down Regulator
o
1x Internal 3A
P-P
Step-Down Regulator
o
1x 2A Source/Sink Linear Regulator with Dynamic
REFIN
o
Internal BST Diodes
o
Internal 5V, 50mA Linear Regulator
o
Fault Protection—Undervoltage, Overvoltage,
Thermal, Peak Current Limit
o
Independent Enable Inputs and Power-Good
Outputs
o
Voltage-Controlled Soft-Start
o
High-Impedance Shutdown
o
10µA (typ) Shutdown Current
MAX17017
The MAX17017 is a quad-output controller for ultra-
mobile portable computers (UMPCs) that rely on a low-
power architecture. The MAX17017 provides a compact,
low-cost controller capable of providing four indepen-
dent regulators—a main stage, a 3A
P-P
internal step-
down, a 5A
P-P
internal step-down, and a 2A source/sink
linear regulator.
The main regulator can be configured as either a step-
down converter (for 2 to 4 Li+ cell applications) or as a
step-up converter (for 1 Li+ cell applications). The inter-
nal switching regulators include 5V synchronous
MOSFETs that can be powered directly from a single Li+
cell or from the main 3.3V/5V power stages. Finally, the
linear regulator is capable of sourcing and sinking 2A to
support DDR termination requirements or to generate a
fixed output voltage.
The step-down converters use a peak current-mode,
fixed-frequency control scheme—an easy to implement
architecture that does not sacrifice fast-transient
response. This architecture also supports peak current-
limit protection and pulse-skipping operation to maintain
high efficiency under light-load conditions.
Separate enable inputs and independent open-drain
power-good outputs allow flexible power sequencing. A
soft-start function gradually ramps up the output volt-
age to reduce the inrush current. Disabled regulators
enter high-impedance states to avoid negative output
voltage created by rapidly discharging the output
through the low-side MOSFET. The MAX17017 also
includes output undervoltage, output overvoltage, and
thermal-fault protection.
The MAX17017 is available in a 48-pin, 6mm x 6mm
thin QFN package.
Ordering Information
PART
MAX17017GTM+
TEMP RANGE
-40°C to +105°C
PIN-PACKAGE
48 TQFN-EP*
+Denotes
a lead(Pb)-free/RoHS-compliant package.
*EP
= Exposed pad.
Pin Configuration
TOP VIEW
POKB
FBB
POKA
26
BSTB
BSTA
DHA
DLA
LXB
LXB
LXB
LXA
FBA
25
24 CSPA
23 CSNA
22 AGND
21 REF
20 FREQ
19 UP/DN
18 INA
17 V
CC
16 BYP
15 LDO5
14 INLDO
EXPOSED PAD = GND
1
POKC
2
BSTC
3
LXC
4
LXC
5
LXC
6
LXC
7
OUTD
8
OUTD
9
IND
10
FBD
11
VTTR
12
REFIND
13 SHDN
36
ONB 37
SYNC 38
ONA 39
INBC 40
INBC 41
INBC 42
INBC 43
V
DD
44
POKD 45
OND 46
ONC 47
FBC 48
35
34
33
32
31
30
29
28
27
Applications
1-to-4 Li+ Cell Battery-Powered Devices
Low-Power Architecture
Ultra-Mobile PC (UMPC)
Portable Gaming
Notebook and Subnotebook Computers
PDAs and Mobile Communicators
MAX17017
+
THIN QFN
________________________________________________________________
Maxim Integrated Products
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.
Quad-Output Controller for
Low-Power Architecture
MAX17017
ABSOLUTE MAXIMUM RATINGS
INLDO,
SHDN
to GND............................................-0.3V to +28V
LDO5, INA, V
DD
, V
CC
to GND ..................................-0.3V to +6V
DHA to LXA .............................................-0.3V to (V
BSTA
+ 0.3V)
ONA, ONB, ONC, OND to GND ...............................-0.3V to +6V
POKA, POKB, POKC, POKD to GND .........-0.3V to (V
CC
+ 0.3V)
REF, REFIND, FREQ,
UP/DN,
SYNC to GND ........................................-0.3V to (V
CC
+ 0.3V)
FBA, FBB, FBC, FBD to GND .....................-0.3V to (V
CC
+ 0.3V)
BYP to GND ............................................-0.3V to (V
LDO5
+ 0.3V)
CSPA, CSNA to GND .................................-0.3V to (V
CC
+ 0.3V)
DLA to GND................................................-0.3V to (V
DD
+ 0.3V)
INBC, IND to GND....................................................-0.3V to +6V
OUTD to GND............................................-0.3V to (V
IND
+ 0.3V)
VTTR to GND.............................................-0.3V to (V
BYP
+ 0.3V)
LXB, LXC to GND ....................................-1.0V to (V
INBC
+ 0.3V)
BSTB to GND ....................................(V
DD
- 0.3V) to (V
LXB
+ 6V)
BSTC to GND ....................................(V
DD
- 0.3V) to (V
LXC
+ 6V)
BSTA to GND ....................................(V
DD
- 0.3V) to (V
LXA
+ 6V)
REF Short-Circuit Current......................................................1mA
Continuous Power Dissipation (T
A
= +70°C)
Multilayer PCB: 48-Pin 6mm x 6mm
2
TQFN
(T4866-2 derated 37mW/°C above +70°C) ....................2.9W
Operating Temperature Range .........................-40°C to +105°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) ................................+300°C
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 (step-down), V
INLDO
= 12V, V
INA
= V
INBC
= V
DD
= V
CC
= V
BYP
= V
CSPA
= V
CSNA
= 5V, V
IND
= 1.8V, V
SHDN
=
V
ONA
= V
ONB
= V
ONC
= V
OND
= 5V, I
REF
= I
LDO5
= I
OUTD
= no load, FREQ = GND,
UP/DN
= V
CC
,
T
A
= 0°C to +85°C,
unless other-
wise noted. Typical values are at T
A
= +25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
UP/DN
= GND (step-up), INA
Input Voltage Range
UP/DN
= LDO5 (step-down), INLDO,
INA = LDO5
UP/DN
= GND (step-up), INA = INLDO,
rising edge hysteresis = 100mV
INA Undervoltage Threshold
V
INA(UVLO)
UP/DN
= LDO5 (step-down), INA = V
CC
,
rising edge, hysteresis = 160mV
T
A
= 0°C to +85°C
MIN
3.0
5.5
2.5
4.0
2.3
UP/DN
= GND (step-up)
2.9
3.0
2.7
4.2
TYP
MAX
5.0
24
2.9
V
4.4
5.5
V
V
V
UNITS
INBC Input Voltage Range
Minimum Step-Up Startup
Voltage
SUPPLY CURRENTS
V
INLDO
Shutdown Supply Current
V
INLDO
Suspend Supply Current
V
CC
Shutdown Supply Current
V
DD
Shutdown Supply Current
INA Shutdown Current
V
CC
Supply Current
Main Step-Down Only
I
INA
I
IN(SHDN)
I
IN(SUS)
V
IN
= 5.5V to 26V,
SHDN
= GND
V
INLDO
= 5.5V to 26V, ON_ = GND,
SHDN
= INLDO
SHDN
= ONA = ONB = ONC = OND =
GND, T
A
= +25°C
SHDN
= ONA = ONB = ONC = OND =
GND, T
A
= +25°C
SHDN
= ONA = ONB = ONC = OND =
GND,
UP/DN
= V
CC
ONA = V
CC
, ONB = ONC = OND = GND;
does not include switching losses,
measured from V
CC
10
50
0.1
0.1
7
15
80
1
1
10
μA
μA
μA
μA
μA
210
300
μA
2
_______________________________________________________________________________________
Quad-Output Controller for
Low-Power Architecture
ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 1 (step-down), V
INLDO
= 12V, V
INA
= V
INBC
= V
DD
= V
CC
= V
BYP
= V
CSPA
= V
CSNA
= 5V, V
IND
= 1.8V, V
SHDN
=
V
ONA
= V
ONB
= V
ONC
= V
OND
= 5V, I
REF
= I
LDO5
= I
OUTD
= no load, FREQ = GND,
UP/DN
= V
CC
,
T
A
= 0°C to +85°C,
unless other-
wise noted. Typical values are at T
A
= +25°C.) (Note 1)
PARAMETER
V
CC
Supply Current
Main Step-Down and Regulator B
V
CC
Supply Current
Main Step-Down and Regulator C
V
CC
Supply Current
Main Step-Down and Regulator D
INA Supply Current (Step-Down)
INA + V
CC
Step-Up Supply Current
5V LINEAR REGULATOR (LDO5)
LDO5 Output Voltage
LDO5 Short-Circuit Current Limit
BYP Switchover Threshold
LDO5-to-BYP Switch Resistance
1.25V REFERENCE
Reference Output Voltage
Reference Load Regulation
Reference Undervoltage Lockout
OSCILLATOR
FREQ = V
CC
Oscillator Frequency
f
OSC
f
SWA
Switching Frequency
Maximum Duty Cycle
(All Switching Regulators)
Minimum On-Time
(All Switching Regulators)
f
SWB
f
SWC
D
MAX
t
ON(MIN)
FREQ = V
CC
or GND
FREQ = REF
FREQ = REF
FREQ = GND
Main step-up/step-down (regulator A)
Regulator B
Regulator C
90
0.9
500
750
1.0
1/2 f
OSC
f
OSC
1/2 f
OSC
93.5
90
75
V
CC
+
0.3
V
Step-down configuration (UP/DN = V
CC
)
1.0
V
CC
+
0.3
%
ns
MHz
1.1
kHz
MHz
V
REF
_V
REF
V
REF(UVLO)
No load
I
REF
= -1μA to +50μA
1.237
1.25
3
1.0
1.263
10
V
mV
V
V
BYP
R
BYP
V
LDO5
V
INLDO
= 5.5V to 26V, I
LDO5
= 0 to 50mA,
BYP = GND
LDO5 = BYP = GND
Rising edge
LDO5 to BYP, V
BYP
= 5V, I
LDO5
= 50mA
4.8
70
5.0
160
4.65
1.5
4
5.2
250
V
mA
V
_
I
INA
I
INA
SYMBOL
CONDITIONS
ONA = ONB = V
CC
, ONC = OND = GND;
does not include switching losses,
measured from V
CC
ONA = ONC = V
CC
, ONB = OND = GND;
does not include switching losses,
measured from V
CC
ONA = OND = V
CC
, ONB = ONC = GND;
does not include switching losses;
measured from V
CC
ONA = V
CC
,
UP/DN
= V
CC
(step-down)
ONA = V
CC
,
UP/DN
= GND (step-up)
T
A
= 0°C to +85°C
MIN
TYP
280
MAX
350
UNITS
MAX17017
μA
280
350
μA
2.2
40
320
3
60
410
mA
μA
μA
REGULATOR A (Main Step-Up/Step-Down)
Step-up configuration (UP/DN = GND)
Output-Voltage Adjust Range
3.0
_______________________________________________________________________________________
3
Quad-Output Controller for
Low-Power Architecture
MAX17017
ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 1 (step-down), V
INLDO
= 12V, V
INA
= V
INBC
= V
DD
= V
CC
= V
BYP
= V
CSPA
= V
CSNA
= 5V, V
IND
= 1.8V, V
SHDN
=
V
ONA
= V
ONB
= V
ONC
= V
OND
= 5V, I
REF
= I
LDO5
= I
OUTD
= no load, FREQ = GND,
UP/DN
= V
CC
,
T
A
= 0°C to +85°C,
unless other-
wise noted. Typical values are at T
A
= +25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
Step-up configuration (UP/DN = GND),
V
CSPA
- V
CSNA
= 0 to 20mV, 90% duty
cycle
Step-down configuration (UP/DN = V
CC
),
V
CSPA
- V
CSNA
= 0mV, 90% duty cycle
Step-up configuration (UP/DN = GND),
V
CSPA
- V
CSNA
= 0mV, 90% duty cycle
V
FBA
Step-down configuration (UP/DN = V
CC
),
V
CSPA
- V
CSNA
= 0 to 20mV, 90% duty
cycle
Step-up configuration (UP/DN = GND),
V
CSPA
- V
CSNA
= 0 to 20mV
Step-down configuration (UP/DN = V
CC
),
V
CSPA
- V
CSNA
= 0 to 20mV
UP/DN
= GND
or V
CC
,
0 to 100% duty
cycle
I
FBA
V
CSA
I
CSA
V
ILIMA
V
IDLEA
V
IZX
R
DH
R
DL
I
DH
I
DL(SRC)
I
DL(SNK)
R
BSTA
DHA forced high and low
DLA forced high
DLA forced low
DHA forced to 2.5V
DLA forced to 2.5V
DLA forced to 2.5V
T
A
= +25°C
18
Step-up (UP/DN =
GND)
Step-down (UP/DN
= V
CC
)
5
10
-100
0
40
20
4
1
2.5
2.5
1.5
0.7
0.7
1.5
5
5
5
3
T
A
= 0°C to +85°C
MIN
0.975
TYP
0.99
MAX
1.013
V
0.968
0.959
0.97
1.003
1.013
V
0.930
1.003
UNITS
FBA Regulation Voltage
V
FBA
FBA Regulation Voltage
(Overload)
-20
mV
-40
10
16
-5
16
mV
22
+100
V
CC
+
0.3V
60
22
nA
V
μA
mV
mV
mV
Ω
Ω
A
A
Ω
FBA Load Regulation
ΔV
FBA
FBA Line Regulation
FBA Input Current
Current-Sense Input Common-
Mode Range
Current-Sense Input Bias Current
Current-Limit Threshold (Positive)
Idle Mode™ Threshold
Zero-Crossing Threshold
DHA Gate Driver On-Resistance
DLA Gate Driver On-Resistance
DHA Gate Driver Source/Sink
Current
DLA Gate Driver Source/Sink
Current
BSTA Switch On-Resistance
UP/DN
= GND or V
CC
,
T
A
= +25°C
Idle Mode is a trademark of Maxim Integrated Products, Inc.
4
_______________________________________________________________________________________
Quad-Output Controller for
Low-Power Architecture
MAX17017
ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 1 (step-down), V
INLDO
= 12V, V
INA
= V
INBC
= V
DD
= V
CC
= V
BYP
= V
CSPA
= V
CSNA
= 5V, V
IND
= 1.8V, V
SHDN
=
V
ONA
= V
ONB
= V
ONC
= V
OND
= 5V, I
REF
= I
LDO5
= I
OUTD
= no load, FREQ = GND,
UP/DN
= V
CC
,
T
A
= 0°C to +85°C,
unless other-
wise noted. Typical values are at T
A
= +25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
T
A
= 0°C to +85°C
MIN
0.747
0.720
-5
7
-100
8
-5
75
40
3.0
3.45
0.8
100
ONB = GND, V
LXB
= GND or 5V;
V
INBC
= 5V at T
A
= +25°C
I
LXC
= 0A, 0% duty cycle (Note 2)
V
FBC
I
LXC
= 0 to 4A, 0% duty cycle (Note 2)
0 to 100% duty cycle
I
FBC
T
A
= +25°C
High-side n-channel
Low-side n-channel
I
PKC
I
IDLEC
I
ZXC
I
LXC
ONC = GND, V
LXC
= GND or 5V;
V
INBC
= 5V at T
A
= +25°C
-20
5.0
ΔV
FBC
/ΔI
LXC
I
LXC
= 0 to 4A
12
-100
-20
+20
10
+100
150
80
4.0
TYP
0.755
MAX
0.762
0.762
UNITS
REGULATOR B (Internal 3A Step-Down Converter)
FBB Regulation Voltage
FBB Regulation Voltage (Overload)
FBB Load Regulation
FBB Line Regulation
FBB Input Current
Internal MOSFET On-Resistance
LXB Peak Current Limit
LXB Idle-Mode Trip Level
LXB Zero-Crossing Trip Level
LXB Leakage Current
I
PKB
I
IDLEB
I
ZXB
I
LXB
I
FBB
V
FBB
I
LXB
= 0% duty cycle (Note 2)
I
LXB
= 0 to 2.5A, 0% duty cycle (Note 2)
0 to 100% duty cycle
T
A
= +25°C
High-side n-channel
Low-side n-channel
ΔV
FBB
/ΔI
LXB
I
LXB
= 0 to 2.5A
V
V
mV/A
mV
nA
mΩ
A
A
mA
μA
REGULATOR C (Internal 5A Step-Down Converter)
FBC Regulation Voltage
FBC Regulation Voltage (Overload)
FBC Load Regulation
FBC Line Regulation
FBC Input Current
Internal MOSFET On-Resistance
LXC Peak Current Limit
LXC Idle-Mode Trip Level
LXC Zero-Crossing Trip Level
LXC Leakage Current
0.747
0.710
-7
14
-5
50
25
5.75
1.2
100
+20
16
+100
100
40
6.5
0.755
0.762
0.762
V
V
mV/A
mV
nA
mΩ
A
A
mA
μA
REGULATOR D (Source/Sink Linear Regulator and VTTR Buffer)
IND Input Voltage Range
IND Supply Current
IND Shutdown Current
REFIND Input Range
REFIND Input Bias Current
OUTD Output Voltage Range
V
OUTD
V
FBD
with respect to V
REFIND
, OUTD =
FBD, I
OUTD
= +50μA (source load)
V
FBD
with respect to V
REFIND
,
OUTD = FBD, I
OUTD
= -50μA (sink load)
I
OUTD
= ±1A
V
REFIND
= 0 to 1.5V, T
A
= +25°C
V
IND
OND = V
CC
OND = GND, T
A
= +25°C
0.5
-100
0.5
-10
0
-17
-13
1
10
2.8
50
10
1.5
+100
1.5
0
mV
+10
mV/A
V
μA
μA
V
nA
V
FBD Output Accuracy
V
FBD
FBD Load Regulation
_______________________________________________________________________________________
5
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