MAX8934AEVKIT+ [MAXIM]
Fully Assembled and Tested;
| 型号： | MAX8934AEVKIT+ |
| 厂家： | 
MAXIM INTEGRATED PRODUCTS |
| 描述： | Fully Assembled and Tested |
| 文件： | 总15页 (文件大小：499K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
MAX8934A Evaluation Kit
Evaluates: MAX8934A–MAX8934E
General Description
Features
S Battery Temperature Monitor Adjusts Charge
The MAX8934A evaluation kit (EV kit) is a fully assem-
bled and tested circuit for evaluating the MAX8934A
dual-input linear charger and Smart Power SelectorK
with advanced temperature monitoring.
Current and Termination Voltage Automatically
Potentiometer Adjustment Available
0603 Thermistor Footprint Available
The EV kit charges a single-cell lithium-ion (Li+)
battery from either a DC input (AC adapter) or a USB
100mA/500mA source, and provides system power
from the DC input, USB input, or battery. The DC input
has a resistor-adjustable current limit up to 2A, while
the USB input-current limit is logic programmable to
100mA/500mA. USB suspend mode is also supported.
The charge current limit is adjustable from 300mA to
1.5A. The system load has priority over the charger,
so charge current is reduced as necessary to prevent
input overload. Charge current is also thermally regu-
lated. Advanced battery temperature monitoring adjusts
charge current and termination voltage automatically.
Advanced Thermistor Configuration Available
(R21, R22)
Thermistor Enable Input (THMEN)
S Adjustable Input-Current Limit and Fast-Charge
Current Limit
Fast-Charge Current Limit: 750mA and 1.5A
(JU5)
USB Input-Current Limit: 475mA and 95mA
(PEN1, PEN2)
DC Input-Current Limit Up to 2A (R2)
S Status LED Indicators: DOK, UOK, CHG, DONE,
FLT, and OT
The EV kit comes standard with the MAX8934A installed,
but can also be used to evaluate the MAX8934B,
MAX8934C, MAX8934D, and MAX8934E by replacing
the MAX8934A (U1) with the MAX8934_. Request a free
sample of the MAX8934_ when ordering the EV kit.
S USB Suspend Logic Input
S 3.3V Always-On LDO
S Fully Assembled and Tested
Ordering Information
PART
TYPE
MAX8934AEVKIT+
EV KIT
+Denotes lead(Pb)-free and RoHS compliant.
Component List
DESIGNATION QTY
DESCRIPTION
DESIGNATION QTY
DESCRIPTION
10FF Q10%, 16V X5R ceramic
capacitor (0805)
Taiyo Yuden EMK212BJ106KG
1FF Q10%, 6.3V X5R ceramic
capacitor (0402)
Taiyo Yuden JMK105BJ105KV
C1
C2
1
1
C6
C7
1
1
0.1FF Q10%, 10V X5R ceramic
capacitor (0402)
4.7FF Q10%, 10V X5R ceramic
capacitor (0805)
Taiyo Yuden LMK105BJ104KV
Taiyo Yuden LMK212BJ475KD
0.068FF Q10%, 16V X5R ceramic
capacitor (0402)
Taiyo Yuden EMK105BJ683KV
4.7FF Q10%, 6.3V X5R ceramic
capacitor (0805)
Taiyo Yuden JMK212BJ475KD
C3
1
0
C8
C9
1
0
Not installed, ceramic capacitors
(0402)
Not installed, ceramic capacitor
(1206)
C4, C5, C10
Smart Power Selector is a trademark of Maxim Integrated
Products, Inc.
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.
19-5308; Rev 1; 1/14
MAX8934A Evaluation Kit
Evaluates: MAX8934A–MAX8934E
Component List (continued)
DESIGNATION QTY
DESCRIPTION
DESIGNATION QTY
DESCRIPTION
R5, R21
0
Not installed, resistors (0402)
10FF Q10%, 6.3V X5R ceramic
capacitor (0805)
Taiyo Yuden JMK212BJ106KD
C11
1
Not installed, NTC thermistor
(0603)
Vishay NTHS0603N01N1003FF
Murata NCP15WF104F03
R6
0
Red LEDs (0603)
Panasonic LNJ208R8ARA
or
Green LEDs
Avago HSMG-C190
D1–D6
J1, J2
6
100kI Q1% resistors (0402),
lead free
R7, R8
2
6
1MI Q5% resistors (0402), lead
free
R14–R19
USB type-AB mini jacks, right
angle
Molex 56579-0576
2
5
500kI, 25-turn potentiometer
Bourns 3296Y-1-504 LF
R20
R22
1
1
0I Q1% resistor (0402), lead free
3-pin headers, 0.1in centers
Sullins PEC36SAAN
Digi-Key S1012E-36-ND
JU1, JU2, JU3,
JU6, JU8
Dual-input linear battery charger
(28 TQFN-EP*)
U1
1
Maxim MAX8934AETI+
2-pin headers, 0.1in centers
Sullins PEC36SAAN
Digi-Key S1012E-36-ND
JU4, JU5, JU7,
JU9–JU17
12
Shunts
Sullins STC02SYAN,
Mouser 151-8000, or
Digi-Key S9000-ND
—
14
1
4.7kI Q5% resistors (0402), lead
free
R1, R9–R13
R2
6
1
2
PCB: MAX8934A EVALUATION
KIT+
1.5kI Q1% resistor (0402), lead
free
—
4kI Q1% resistors (0402), lead
free
*EP = Exposed pad.
R3, R4
Component Suppliers
SUPPLIER
PHONE
WEBSITE
Avago Technologies
Bourns, Inc.
877-673-9442
408-496-0706
800-344-4539
800-768-6539
800-346-6873
770-436-1300
800-344-2112
760-744-0125
800-348-2496
847-803-6100
402-563-6866
www.avagotech.com
www.bourns.com
Digi-Key Corp.
www.digikey.com
Molex
www.molex.com
Mouser Electronics
Murata Electronics North America, Inc.
Panasonic Corp.
Sullins Electronics Corp.
Taiyo Yuden
www.mouser.com
www.murata-northamerica.com
www.panasonic.com
www.sullinselectronics.com
www.t-yuden.com
TDK Corp.
www.component.tdk.com
www.vishay.com
Vishay
Note: Indicate that you are using the MAX8934_ when contacting these component suppliers.
2
Maxim Integrated
MAX8934A Evaluation Kit
Evaluates: MAX8934A–MAX8934E
10) Increase the load current on SYS to 1.5A.
Quick Start
Recommended Equipment
Adjustable DC power supply capable of at least 3A
at 7V
11) Verify that the charge current into the battery is
approximately 0.5A.
•
•
12) Increase the load current on SYS to 2.5A.
13) Verify that the current out of the battery is approxi-
mately 0.5A.
Battery or simulated battery
1-cell Li+ or Li-Poly battery (Figure 1A)
Simulated battery; preloaded power supply
(Figure 1B)
Detailed Description of Hardware
Adjusting the EV Kit for
In-Circuit Evaluation
Follow the steps below to ensure that the EV kit is config-
ured for operation in a specific application circuit:
•
•
•
Two digital multimeters (DMMs)
Up to 3A adjustable load
Two 3A ammeters
1) Verify that the EV kit DC input-current limit setting is
less than the AC adapter source current limit.
Procedure
The MAX8934A EV kit is fully assembled and tested.
Follow the steps below to verify board operation. Use
twisted wires of appropriate gauge (20AWG) that are
as short as possible to connect the battery and power
sources.
2) If necessary, replace R2 in the EV kit such that the
DC input current is less than or equal to the AC
adapter output-current capability.
3) Verify that the USB source can supply 100mA or
500mA.
1) Ensure that the EV kit has the jumper settings shown
in Figure 2 and Table 1.
4) Ensure that the charge-current setting of the EV kit
does not exceed the battery rating, or replace resis-
tor R3 and remove the shunt from JU5 as required.
See the Setting the Input-Current Limit (DC Input
Path), Setting the Input-Current Limit (USB Input
Path), and Setting the Fast-Charge Current sections
for more details.
2) Preset the adjustable load to 0A.
3) Preset the DC power supply to 5V. Turn off the
power supply. Caution: Do not turn on the power
supply until all connections are completed.
4) Connect the EV kit to the power supply, battery, or
preloaded power supply, and meters, as shown in
Figure 2. Set the ammeters to their largest current
range (lowest series impedance).
B. SIMULATED BATTERY
A. Li+/Li-POLY BATTERY
(PRELOADED POWER SUPPLY)
5) Turn on the power supply.
BAT
6) Verify that the voltage at SYS is approximately 5V.
BAT
0 TO 4.2V
1I
R 10W
MAX8934A EV KIT
7) If 3V P V
P 4.1V, verify that the current from
MAX8934A EV KIT
BAT
R 5A
BATT+ into the battery is approximately 0.75A.
GND
GND
8) Increase the load current on SYS to 1A.
9) Verify that the charge current into the battery
remains near 0.75A.
Figure 1. Battery Options for Evaluating the MAX8934A EV Kit
Maxim Integrated
3
MAX8934A Evaluation Kit
Evaluates: MAX8934A–MAX8934E
SYS
VOLTMETER
+
-
+
-
JU10
A
BAT
+
+
-
BATTERY OR
SIMULATED
BATTERY
-
BAT
VOLTMETER
+
-
+
-
A
IN
POWER
SUPPLY
MAX8934A
GND2
EVALUATION KIT
DCGND
*ALL AMMETERS NEED
TO BE SET FOR THEIR
LARGEST CURRENT RANGE
READINGS. THIS
JU7
JU17
MINIMIZES THE SERIES
IMPEDANCE OF THE
AMMETER.
-
-
-
-
-
Figure 2. Connection Diagram and Default Jumper Connections
4
Maxim Integrated
MAX8934A Evaluation Kit
Evaluates: MAX8934A–MAX8934E
Table 1. Jumper Functions
JUMPER NODE OR FUNCTION
POSITION
FUNCTION
Charger disabled
Charger enabled
See Tables 2 and 3
See Tables 2 and 3
Positive (+) to CEN
Negative (-) to CEN*
Positive (+) to PEN1*
Positive (+) to PEN2*
Open
JU1
CEN
JU2
JU3
PEN1
PEN2
V
must be powered externally and cannot exceed 5.5V
LOGIC
LOGIC
JU4
VLOGIC
Shunt*
V
= V
LDO
Fast-charge current = 750mA, R3 is connected from ISET to
GND and R4 is not connected
Open*
ISET (fast-charge
current adjustment)
JU5
Fast-charge current = 1.5A, R3 and R4 are in parallel from ISET
to GND
Shunt
Positive (+) to USUS
USB suspend; an external supply is required for V
LOGIC
JU6
JU7
USUS
Negative (-) to USUS* Not in USB suspend
Open*
Shunt
THM not connected to GND
Connects THM to GND; forces a THM “hot” state
Connects THMEN to the V rail; enables the thermistor
THM forced “hot”
LOGIC
Positive (+) to
THMEN*
circuit in discharge mode and enables the internal THMSW
switch, pulling up R7 to THMSW
JU8
THMEN
Negative (-) to
THMEN
Connects THMEN to GND; disables the internal THMSW switch
in discharge mode and disables the thermistor monitoring circuit
Open
Shunt*
Open
Shunt*
Open
Shunt*
Open
Shunt*
Open
Shunt*
Open
Shunt*
Open*
Shunt
Open
Disconnects indicator LED D1 from DONE
Connects indicator LED D1 to DONE
Disconnects indicator LED D2 from CHG
Connects indicator LED D2 to CHG
Disconnects indicator LED D3 from OT
Connects indicator LED D3 to OT
JU9
DONE LED indicator
CHG LED indicator
OT LED indicator
DOK LED indicator
UOK LED indicator
FLT LED indicator
OT pullup resistor
JU10
JU11
JU12
JU13
JU14
JU15
Disconnects indicator LED D4 from DOK
Connects indicator LED D4 to DOK
Disconnects indicator LED D5 from UOK
Connects indicator LED D5 to UOK
Disconnects indicator LED D6 from FLT
Connects indicator LED D6 to FLT
Disconnects the OT pullup resistor (R16) from V
LDO
Connects the OT pullup resistor (R16) to V
LDO
Disconnects R8 from THM
THM to GND fixed
resistor
Connects a 500kI resistor (R8) from THM to GND; R8 = R7 and
sets V = 1/2 x V
shunted
JU16
JU17
Shunt*
Open*
Shunt
THM
THMSW; ensures that JU7 and JU17 are not
Disconnects the 500kI potentiometer (R20) from THM; ensures
that JU7 and JU16 are not shunted
THM to GND
potentiometer
Connects a 500kI potentiometer (R20) from THM to GND; this
allows evaluation of battery temperature monitoring thresholds;
ensures that JU7 and JU16 are not shunted
*Default position.
Maxim Integrated
5
MAX8934A Evaluation Kit
Evaluates: MAX8934A–MAX8934E
between the positive terminal (+) and PEN2 to set the
Charger Enable Input (CEN)
Jumper JU1 controls the enable signal for the battery
charger. Install JU1 between the negative terminal (-)
and CEN to enable the charger. Install JU1 between the
positive terminal (+) and CEN to disable the charger.
Note that if no battery is connected and the charger
input-current limit to 500mA (max). Install JU3 between
the negative terminal (-) and PEN2 to set the input-
current limit to 100mA (max). Jumper JU6 programs the
state of the USUS input.
Resistor R2 sets the maximum input current when the
DC input is configured as an adapter input. The EV kit
is disabled, V
, V
SYS BATT
, and V
decay to 0V. If a
LDO
battery is connected and the charger is disabled, V
SYS
default value of R2, or R
(1.5kI), programs the
PSET
tracks V
, and V
BATT
= 3.3V. If V
< 3.3V, then
LDO
SYS
input-current limit to 2A. The minimum value of R2
should be 2kI when evaluating the MAX8934D.
V
LDO
tracks V
.
SYS
Setting the Input-Current Limit
(DC Input Path)
Setting the Input-Current Limit
(USB Input Path)
The DC charging path can be programmed either as an
adapter input or a USB input. Install jumper JU2 between
the positive terminal (+) and PEN1 to program the DC
input as an adapter input. Install JU2 between the nega-
tive terminal (-) and PEN1 to program the DC input as a
USB input.
The USB charging path can be programmed only as a
USB input. Jumper JU3 (PEN2) sets the input-current
limit for the USB input. Install JU3 between the positive
terminal (+) and PEN2 to set the USB input-current limit
to 500mA (max), or between the negative terminal (-) and
PEN2 to set the USB input-current limit to 100mA (max).
Jumper JU6 programs the state of the USUS input.
Jumper JU3 (PEN2) sets the input-current limit when
the DC input is configured as a USB input. Install JU3
Table 2. Charger Control Signal Truth Table (MAX8934A/B/C/E)
(THM Cold Threshold (T2) > THM Hot Threshold (T3))
POWER
SOURCE
PEN1
(JU2)
PEN2 USUS
DC INPUT-
CURRENT LIMIT
USB INPUT-
CURRENT LIMIT
MAXIMUM CHARGE
CURRENT**
DOK
UOK
(JU3)
(JU6)
AC adapter at
DC input
L
X
H*
X
X
3000V/R
3000V/R
ISET
PSET
USB input off; DC
input has priority
L
L
X
X
X
L
L
L
L
L
L
X
X
X
H*
L
L*
L
475mA
95mA
475mA
95mA
0
USB power at
DC input
L
X
H
L
USB suspend
H
H
H
H
L
475mA
95mA
USB power at
USB input; DC
unconnected
3000V/R
ISET
L
X
H
No DC input
USB suspend
0
0
DC and USB
unconnected
H
H
X
X
X
No USB input
H = A shunt from the positive pin to the center pin of the respective jumper (e.g., H on PEN1 is a jumper from positive to the cen-
ter pin of PEN1).
L = A shunt from the negative pin to the center pin of the respective jumper.
X = Don’t care.
*Initial position on the EV kit.
**Charge current cannot exceed the input-current limit. Charge current may be less than the maximum charge current if the total
SYS and BATT load exceeds the input-current limit.
6
Maxim Integrated
MAX8934A Evaluation Kit
Evaluates: MAX8934A–MAX8934E
Table 3. Charger Control Signal Truth Table (MAX8934D)
(THM Cold Threshold (T2) > VTHM > THM Hot Threshold (T3))
FEATURE
DC INPUT
USB INPUT
NOTES
Absolute maximum rating
16V
9V
—
Set by R
, PEN1,
Set by R
, PEN1, PEN2,
PSET
PSET
PEN2, and USUS;
2A (max)
PSET sets the same input-current
limit for DC and USB paths
Input-current limit
and USUS;
1.5A (max)
USB INPUT-
CURRENT
LIMIT
MAXIMUM
CHARGE
CURRENT
PEN1
(JU2)
PEN2
(JU3)
USUS
(JU6)
DC INPUT-
CURRENT LIMIT
POWER SOURCE
DOK
UOK
AC adapter at DC
L
L
X
X
X
X
X
L
L
L
L
L
H
H*
H
L
X
X
X
X
L*
L
3000V/R
3000V/R
3000V/R
3000V/R
PSET
ISET
PSET
ISET
USB input off;
DC input has
priority
L
H*
L
475mA
95mA
475mA
95mA
0
USB power at DC
L
L
L
L
X
H
L
USB suspend
H
H
H
H
H
H
H
H
L
H
L
3000V/R
3000V/R
PSET
ISET
ISET
L
600V/R
3000V/R
PSET
USB power at
USB;
DC open
H
L
L
475mA
475mA
No DC input
L
L
95mA
95mA
X
X
X
H
X
USB suspend
No USB input
0
0
DC and USB open
X
H = A shunt from the positive pin to the center pin of the respective jumper.
L = A shunt from the negative pin to the center pin of the respective jumper.
X = Don’t care.
*Initial position on the EV kit.
**Charge current cannot exceed the input-current limit. Charge current may be less than the maximum charge current if the total
SYS and BATT load exceeds the input-current limit.
A 100kI pullup resistor (R7) to THMSW provides the
bias to a thermistor (allowing ambient temperature to
control the charger behavior), a fixed 100kI pulldown
resistor (JU16, for easiest evaluation of other charger
functionality), or a potentiometer (JU17, for adjusting
THM voltage manually).
Setting the Fast-Charge Current
Resistors R3 and R4 set the fast-charge current limit for
the MAX8934A. Installing jumper JU5 connects both
resistors in parallel, allowing a fast-charge current of
up to 1.5A (when the DC input is configured for > 1.5A
input-current limit). Removing JU5 allows a fast-charge
current of 750mA. Other fast-charge currents can be set
by changing the R3 and R4 resistances. Use the follow-
ing equation:
The THMEN input determines whether the THMSW
switch is enabled, providing bias to 100kI pullup resis-
tor R7. If a valid input source is present, the state of the
THMEN pin is ignored, and the 100kI pullup resistor
is always biased. If no valid input source is connected,
and only a battery is present, then jumper JU8 controls
the state of the thermistor bias. Install JU8 between the
positive terminal (+) and THMEN to enable the thermis-
tor bias. Install JU8 between the negative terminal (-)
and THMEN to disable the thermistor bias when only a
battery is present.
I
= 3000V/R3 (JU5 not installed)
CHGMAX
Using the Thermistor Monitor
The MAX8934A provides a thermistor monitor circuit that
automatically adjusts either the fast-charge current or the
charge termination voltage, depending on the voltage at
the THM input. Tables 2 and 3 are true when THM cold
threshold (T2) > V
> THM hot threshold (T3). If V
THM
THM
is outside this range, refer to the MAX8934A–MAX8934E
IC data sheet for additional details.
Maxim Integrated
7
MAX8934A Evaluation Kit
Evaluates: MAX8934A–MAX8934E
Jumper JU7 allows intentional introduction of a
Open-Drain Indicators
temperature fault condition. Install JU7 to force a THM
“hot” state, where the charger immediately stops charg-
ing the battery. When the battery is being discharged,
this is a simple way of evaluating the OT functionality.
The DONE, CHG, OT, DOK, UOK, and FLT indicators
all utilize the V
bias supply for their respective
LOGIC
pullup voltages. Jumpers JU9–JU14 connect the LED
indicators to each of the open-drain flags. JU15 (OT
only) connects a pullup resistor. Table 1 summarizes the
functions of each jumper.
When using alternate resistance and/or beta thermistors
other than the two shown in the component list, then the
circuit of Figure 3 might result in temperature trip thresh-
olds different from the nominal values. In this case, R21
and R22 of Figure 3 allow for compensating the thermis-
tor in order to shift the temperature trip thresholds back
to the nominal value. In general, smaller values of R21
shift all the temperature trip thresholds down. However,
the lower-temperature thresholds are affected more then
the higher-temperature thresholds. Furthermore, larger
values of R22 shift all the temperature trip thresholds
up. However, the higher-temperature thresholds are
affected more than the lower-temperature thresholds.
For more details, refer to the MAX8934A–MAX8934E IC
data sheet.
Charge Timers
A fault timer prevents the battery from charging
indefinitely. The prequalification and fast-charge timers
are controlled by the capacitance at CT (C3) (THM cold
threshold (T2) < V
< THM hot threshold (T3)).
THM
C3
PREQUAL : t
= 30min×
PQ
0.068µF
C3
FAST CHARGE : t
= 300min×
FC
0.068µF
The general relation of thermistor resistance to tempera-
ture is defined by the following equation:
TOP-OFF:
t
= 15s (60min for the MAX8934B
TO
and MAX8934D)
1
1
R
= R
β ×
−
THM
25 ×e
T + 273°C 298°C
EV Kit Temperature Range
where:
The PCB and components of the EV kit allow operation
with ambient temperatures from -25°C to +85°C. Remove
LEDs D1–D6, or open jumpers JU9–JU14, to increase the
ambient temperature operating range from -30°C to +85°C.
R
= Resistance in I of the thermistor at
THM
temperature T in Celsius.
R
25
= Resistance in I of the thermistor at +25°C.
= Material constant of the thermistor, which
typically ranges from 3000K to 5000K.
Evaluating the MAX8934B, MAX8934C,
MAX8934D, and MAX8934E
β
The EV kit comes with the MAX8934A installed, but can
also be used to evaluate the MAX8934B, MAX8934C,
MAX8934D, and MAX8934E. To evaluate these ICs,
carefully remove the MAX8934A (U1) from the EV kit
and replace with the MAX8934_. No other component
change is required except when using the MAX8934D.
The MAX8934D requires that R2 be removed and
replaced with a 2kI(min) resistor. Request a free sample
of the MAX8934_ when ordering the EV kit.
T = Temperature of the thermistor in °C.
Pullup Supply for Logic Inputs and
Indicators/Fault Flags
The EV kit provides two options for biasing the logic
inputs and the open-drain indicators. Either the LDO out-
put or an external logic supply can be used to provide
this bias. Install jumper JU4 to use V
as the bias
LDO
source; otherwise, connect an external supply (2.5V to
5.5V) to V to serve as the bias source.
LOGIC
When evaluating the USB suspend behavior with no
battery connected, it is required that an external V
supply be used.
LOGIC
8
Maxim Integrated
MAX8934A Evaluation Kit
Evaluates: MAX8934A–MAX8934E
DONE
FLT
VLOGIC
VLOGIC
R14
1MI
R19
1MI
R1
R13
4.7kI
4.7kI
J2
1
JU9
JU14
1
28
DONE
FLT
D1
C1
10µF
16V
D6
DC
UOK
2
3
2
3
4
5
DC
DC
VLOGIC
R18
1MI
DCGND
R12
4.7kI
VLOGIC
JU13
27
UOK
D5
DOK
4
5
JU1
CEN
VLOGIC
VLOGIC
R17
1MI
V
LDO
JU2
PEN1
R11
4.7kI
JU12
26
VLOGIC
DOK
R16
1MI
D4
D3
6
7
JU3
PEN2
PSET
C10
OPEN
R2
1.5kI
1%
JU15
OT
R10
4.7kI
VLOGIC
JU11
V
25
VLOGIC
LDO
OT
24
23
VLOGIC
VL
SYS
SYS
SYS
JU4
C11
10µF
6.3V
C9
OPEN
8
VL
CHG
GND3
C2
0.1µF
10V
U1
VLOGIC
R15
1MI
MAX8934A
GND
9
GND
CT
R9
4.7kI
JU10
22
CHG
10
D2
C3
0.068µF
16V
21
20
BAT
BAT
BAT
C8
4.7µF
6.3V
R3
4kI
1%
GND2
11
ISET
J1
1
2
3
4
5
R4
4kI
1%
USB
JU5
19
18
USB
USB
C7
4.7µF
10V
GND1
C4
OPEN
R5
OPEN
V
LDO
VLOGIC
17
LDO
LDO
C6
1µF
6.3V
12
13
JU6
USUS
GND
GND5
16
15
THMSW
THMSW
THMEN
THMSW
VLOGIC
R22
R7
0I
100kI
1%
1%
BATT_THM
THM
14
JU8
THM
JU17
JU16
R8
R6
NTC
OPEN
R21
OPEN
C5
OPEN
T
JU7
R20
500kI
100kI
TRIMPOT
1%
Figure 3. MAX8934A EV Kit Schematic
Maxim Integrated
9
MAX8934A Evaluation Kit
Evaluates: MAX8934A–MAX8934E
Figure 4. MAX8934A EV Kit Component Placement Guide—Top Layer
10
Maxim Integrated
MAX8934A Evaluation Kit
Evaluates: MAX8934A–MAX8934E
Figure 5. MAX8934A EV Kit PCB Layout—Top Layer
Maxim Integrated
11
MAX8934A Evaluation Kit
Evaluates: MAX8934A–MAX8934E
Figure 6. MAX8934A EV Kit PCB Layout—Inner Layer 2
12
Maxim Integrated
MAX8934A Evaluation Kit
Evaluates: MAX8934A–MAX8934E
Figure 7. MAX8934A EV Kit PCB Layout—Inner Layer 3
Maxim Integrated
13
MAX8934A Evaluation Kit
Evaluates: MAX8934A–MAX8934E
Figure 8. MAX8934A EV Kit PCB Layout—Bottom Layer
14
Maxim Integrated
MAX8934A Evaluation Kit
Evaluates: MAX8934A–MAX8934E
Revision History
REVISION REVISION
PAGES
DESCRIPTION
CHANGED
NUMBER
DATE
0
1
6/10
Initial release
Added a ground symbol in Figure 3
—
9
1/14
Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent
licenses are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time. The parametric values (min and
max limits) shown in the Electrical Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance.
Maxim Integrated 160 Rio Robles, San Jose, CA 95134 USA 1-408-601-1000
15
©
2014 Maxim Integrated Products, Inc.
Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc.
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