Rainbow Electronics MAX1585 User Manual
General Description
The MAX1584/MAX1585 provide a complete powersupply solution for slim digital cameras. They improve
performance, component count, and size compared to
conventional multichannel controllers in 2-cell AA, 1-cell
Li+, and dual-battery designs. On-chip MOSFETs provide up to 95% efficiency for critical power supplies,
while additional channels operate with external FETs for
optimum design flexibility. This optimizes overall efficiency and cost, while also reducing board space.
The MAX1584/MAX1585 include 5 high-efficiency DCDC conversion channels:
• Step-up DC-DC converter with on-chip FETs
• Step-down DC-DC converter with on-chip FETs
• Three PWM DC-DC controllers for CCD, LCD, LED,
or other functions
The step-down DC-DC converter can operate directly
from the battery or from the step-up output, providing
boost-buck capability with a compound efficiency of up
to 90%. Both devices include three PWM DC-DC controllers: the MAX1584 includes two step-up controllers
and one step-down controller, while the MAX1585
includes one step-up controller, one inverting controller,
and one step-down controller. All DC-DC channels
operate at one fixed frequency—settable from 100kHz
to 1MHz—to optimize size, cost, and efficiency. Other
features include soft-start, power-OK outputs, and overload protection. The MAX1584/MAX1585 are available
in space-saving, 32-pin thin QFN packages. An evaluation kit is available to expedite designs.
Applications
Digital Cameras
PDAs
Features
♦ Step-Up DC-DC Converter, 95% Efficient
♦ Step-Down DC-DC Converter
Operate from Battery for 95% Efficient
Step-Down
90% Efficient Boost-Buck with Step-Up
♦ Three Auxiliary PWM DC-DC Controllers
♦ No Transformers (MAX1585)
♦ Up to 1MHz Operating Frequency
♦ 1mA Shutdown Mode
♦ Internal Soft-Start Control
♦ Overload Protection
♦ Compact 32-Pin Thin QFN Package (5mm x 5mm)
MAX1584/MAX1585
5-Channel Slim DSC Power Supplies
________________________________________________________________ Maxim Integrated Products 1
Ordering Information
MAX1585
INPUT
0.7V TO 5.5V
ONSU
ONSD
ON1
ON2
ON3
STEP-UP SYSTEM +5V
STEP-DOWN CORE +1.8V
AUX1 LCD, CCD, LED +15V
AUX2 CCD -7.5V
AUX3 LOGIC +3.3V
Typical Operating Circuit
19-2883; Rev 0; 7/03
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
EVALUATION KIT
AVAILABLE
Pin Configuration
PART TEMP RANGE
MAX1584ETJ -40°C to +85°C
MAX1585ETJ -40°C to +85°C
PIN-
PACKAGE
32 Thin QFN
5mm x 5mm
32 Thin QFN
5mm x 5mm
FB331CC330GND29DL128DL327DL226PV25INDL2
32
1CC1
FB1
2
PGSD
3
ON110ON211ON3
THIN QFN
5mm x 5mm
MAX1584
MAX1585
12
13
ONSU
REF
14
15
FBSU
LXSD
PVSD
ONSD
CCSD
FBSD
4
5
6
7
8
9
24 CC2
23
22
21
20
19
18
17
16
CCSU
AUX1OK
AUX
FUNCTIONS
2 step-up
1 step-down
1 step-up
1 step-down
1 inverting
FB2
PVSU
LXSU
PGSU
OSC
SCF
SDOK
MAX1584/MAX1585
5-Channel Slim DSC Power Supplies
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
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.
PV, PVSU, PVSD, SDOK, AUX1OK, SCF, ON_, FB_ to
GND..........................................................................-0.3V to +6V
PGND to GND....................................................…-0.3V to +0.3V
INDL2, DL1, DL3 to GND.........................-0.3V to (PVSU + 0.3V)
DL2 to GND ............................................-0.3V to (INDL2 + 0.3V)
PV to PVSU ...........................................................-0.3V to + 0.3V
LXSU Current (Note 1) ..........................................................3.6A
LXSD Current (Note 1) ........................................................2.25A
REF, OSC, CC_ to GND...........................-0.3V to (PVSU + 0.3V)
Continuous Power Dissipation (T
A
= +70°C)
32-Pin Thin QFN (derate 22mW/°C above +70°C) ....1700mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
ELECTRICAL CHARACTERISTICS
(V
PVSU
= VPV= V
PVSD
= V
INDL2
= 3.6V, TA= 0°C to +85°C, unless otherwise noted.)
Note 1: LXSU has internal clamp diodes to PVSU and PGND, and LXSD has internal clamp diodes to PVSD and PGND. Applications
that forward bias these diodes should take care not to exceed the device’s power dissipation limits.
GENERAL
PARAMETER CONDITIONS MIN TYP MAX UNITS
Input Voltage Range (Note 2) 0.7 5.5 V
Step-Up Minimum Startup
Voltage
I
< 1mA, TA = +25°C, startup voltage tempco is
LOAD
-2300ppm/°C (typ) (Note 3)
Shutdown Supply Current into PV PV = 3.6V 0.1 5 µA
Supply Current into PV with
Step-Up Enabled
Supply Current into PV with
Step-Up and Step-Down Enabled
ONSU = 3.6V, FBSU = 1.5V
(does not include switching losses)
ONSU = ONSD = 3.6V, FBSU = 1.5V, FBSD = 1.5V
(does not include switching losses)
0.9 1.1 V
300 450 µA
450 700 µA
Total Supply Current from PV and
PVSU with Step-Up and One AUX
Enabled
ONSU = ON1 = 3.6V, FBSU = 1.5V, FB2 = 1.5V
(does not include switching losses)
400 650 µA
REFERENCE
Reference Output Voltage I
Reference Load Regulation 10µA < I
= 20µA 1.23 1.25 1.27 V
REF
< 200µA 4.5 10 mV
REF
Reference Line Regulation 2.7 < PVSU < 5.5V 1.3 5 mV
OSCILLATOR
OSC Discharge Trip Level Rising edge 1.225 1.25 1.275 V
OSC Discharge Resistance OSC = 1.5V, I
= 3mA 52 80 Ω
OSC
OSC Discharge Pulse Width 150 ns
OSC Frequency R
= 47kΩ, C
OSC
=100pF 500 kHz
OSC
STEP-UP DC-DC CONVERTER
Step-Up Startup-to-Normal
Operating Threshold
Step-Up Startup-to-Normal
Operating Threshold Hysteresis
Rising edge or falling edge (Note 4) 2.30 2.5 2.65 V
80 mV
MAX1584/MAX1585
5-Channel Slim DSC Power Supplies
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS (continued)
(V
PVSU
= VPV= V
PVSD
= V
INDL2
= 3.6V, TA= 0°C to +85°C, unless otherwise noted.)
Idle Mode is a trademark of Maxim Integrated Products, Inc.
PARAMETER CONDITIONS MIN TYP MAX UNITS
Step-Up Voltage Adjust Range 3.0 5.5 V
Start Delay of ONSD, ON1, ON2,
ON3 after SU in Regulation
1024
OSC
cycles
FBSU Regulation Voltage 1.231 1.25 1.269 V
FBSU to CCSU
Transconductance
FBSU = CCSU 80 135 185 µS
FBSU Input Leakage Current FBSU = 1.25V -100 +1 +100 nA
Idle Mode
Current-Sense Amplifier
Transresistance
TM
Trip Level (Note 6) 150 mA
0.275 V/A
Step-Up Maximum Duty Cycle FBSU = 1V 80 85 90 %
PVSU Leakage Current V
LXSU Leakage Current V
Switch On-Resistance
= 0V, PVSU = 5.5V 0.1 5 µA
LX
= V
LXSU
= 5.5V 0.1 5 µA
OUT
N channel 95 150
P channel 150 250
N-Channel Current Limit 2.4 2.8 3.2 A
P-Channel Turn-Off Current 20 mA
Startup Current Limit PVSU = 1.8V (Note 5) 450 mA
Startup t
OFF
PVSU = 1.8V 700 ns
Startup Frequency PVSU = 1.8V 200 kHz
STEP-DOWN DC-DC CONVERTER
Step-Down Output Voltage
Adjust Range
PVSD must be greater than output (Note 7) 1.25 5.00 V
FBSD Regulation Voltage 1.231 1.25 1.269 V
FBSD to CCSD
Transconductance
FBSD = CCSD 80 135 185 µS
FBSD Input Leakage Current FBSD = 1.25V -100 +0.1 +100 nA
Idle Mode Trip Level (Note 6) 100 mA
Current-Sense Amplifier
Transresistance
LXSD Leakage Current V
Switch On-Resistance
0.5 V/A
= 0 to 3.6V, PVSU = 3.6V 0.1 5 µA
LXSD
N channel 95 150
P channel 150 250
P-Channel Current Limit 0.65 0.8 0.95 A
N-Channel Turn-Off Current 20 mA
OSC
Soft-Start Interval 2048
cycles
SDOK Output Low Voltage 0.1mA into SDOK 0.01 0.1 V
SDOK Leakage Current ONSU = GND 0.01 1 µA
mΩ
mΩ
MAX1584/MAX1585
5-Channel Slim DSC Power Supplies
4 _______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS (continued)
(V
PVSU
= VPV= V
PVSD
= V
INDL2
= 3.6V, TA= 0°C to +85°C, unless otherwise noted.)
PARAMETER CONDITIONS MIN TYP MAX UNITS
AUX1, 2, 3 DC-DC CONTROLLERS
Maximum Duty Cycle FB_ = 1V 80 85 90 %
FB1 and FB3 Regulation Voltage FB_ = CC_ 1.231 1.25 1.269 V
FB2 (MAX1584) Regulation
Voltage
FB2 (MAX1585) (Inverter)
Regulation Voltage
FB_ = CC_ 1.231 1.25 1.269 V
FB_ = CC_ -0.01 0 +0.01 V
FB_ to CC_ Transconductance FB_ = CC_ 80 135 185 µS
FB_ Input Leakage Current FB_ = 1.25V -100 +1 +100 nA
DL_ Driver Resistance Output high or low 2.5 10 Ω
DL_ Drive Current Sourcing or sinking 0.5 A
Soft-Start Interval 4096
AUX1OK Output Low Voltage 0.1mA into AUX1OK 0.01 0.1 V
AUX1OK Leakage Current ONSU = GND 0.01 1 µA
OVERLOAD AND THERMAL PROTECTION
Overload-Protection Fault Delay 100,000
SCF Leakage Current ONSU = PVSU, FBSU = 1.5V 0.1 1 µA
SCF Output Low Voltage 0.1mA into SCF 0.01 0.1 V
Thermal Shutdown +160 °C
Thermal Hysteresis 20 °C
LOGIC INPUTS
ON_ Input Low Level
ON_ Input High Level
ON_ Impedance to GND ON_ = 3.35V 330 kΩ
1.1V < PVSU < 1.8V (ONSU only) 0.2
1.8V < PVSU< 5.5V 0.4
V
-
1.1V < PVSU < 1.8V (ONSU only)
PVSU
0.2
1.8V < PVSU < 5.5V 1.6
OSC
cycles
OSC
cycles
V
V
MAX1584/MAX1585
5-Channel Slim DSC Power Supplies
_______________________________________________________________________________________ 5
ELECTRICAL CHARACTERISTICS
(V
PVSU
= VPV= V
PVSD
= V
INDL2
= 3.6V, TA= -40°C to +85°C, unless otherwise noted.) (Note 8)
PARAMETER CONDITIONS MIN MAX UNITS
GENERAL
Input Voltage Range (Note 2) 0.7 5.5 V
Shutdown Supply Current
into PVSU
Supply Current into PV with
Step-Up Enabled
Supply Current into PV with
Step-Up and Step-Down Enabled
Total Supply Current from PV and
PVSU with Step-Up and One AUX
Enabled
PVSU = 3.6V 5 µA
ONSU = 3.6V, FBSU = 1.5V
(does not include switching losses)
ONSU = ONSD = 3.6V, FBSU = 1.5V, FBSD = 1.5V
(does not include switching losses)
ONSU = ON1 = 3.6V, FBSU = 1.5V, FB2 = 1.5V
(does not include switching losses)
450 µA
700 µA
650 µA
REFERENCE
Reference Output Voltage I
Reference Load Regulation 10µA < I
= 20µA 1.225 1.275 V
REF
< 200µA 10 mV
REF
Reference Line Regulation 2.7V < PVSU < 5.5V 5 mV
OSCILLATOR
OSC Discharge Trip Level Rising edge 1.225 1.275 V
OSC Discharge Resistance OSC = 1.5V, I
= 3mA 80 Ω
OSC
STEP-UP DC-DC CONVERTER
Step-Up Startup-to-Normal
Operating Threshold
Rising edge or falling edge (Note 4) 2.30 2.65 V
Step-Up Voltage Adjust Range 3.0 5.5 V
FBSU Regulation Voltage 1.225 1.275 V
FBSU to CCSU
Transconductance
FBSU = CCSU 80 185 µS
FBSU Input Leakage Current FBSU = 1.25V -100 +100 nA
Step-Up Maximum Duty Cycle FBSU = 1V 80 90 %
PVSU Leakage Current V
LXSU Leakage Current V
Switch On-Resistance
= 0V, PVSU = 5.5V 5 µA
LX
= V
LXSU
= 5.5V 5 µA
OUT
N channel 150
P channel 250
mΩ
N-Channel Current Limit 2.4 3.2 A
STEP-DOWN DC-DC CONVERTER
Step-Down Output Voltage Adjust
Range
PVSD must be greater than output (Note 7) 1.25 5.00 V
MAX1584/MAX1585
5-Channel Slim DSC Power Supplies
6 _______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS (continued)
(V
PVSU
= VPV= V
PVSD
= V
INDL2
= 3.6V, TA= -40°C to +85°C, unless otherwise noted.) (Note 8)
Note 2: The MAX1584/MAX1585 are powered from the step-up output (PVSU). An internal low-voltage startup oscillator drives the
step-up starting at about 0.9V until PVSU reaches approximately 2.5V. When PVSU reaches 2.5V, the main control circuitry
takes over. Once the step-up is up and running, it can maintain operation with very low input voltages; however, output current is limited.
Note 3: Since the device is powered from PVSU, a Schottky rectifier, connected from the input battery to PVSU, is required for low-
voltage startup, or if PVSD is connected to V
IN
instead of PVSU.
Note 4: The step-up regulator is in startup mode until this voltage is reached. Do not apply full load current during startup. A power-
OK output can be used with an external PFET to gate the load until the step-up is in regulation. See the Applications
Information section.
PARAMETER CONDITIONS MIN MAX UNITS
FBSD Regulation Voltage 1.225 1.275 V
FBSD to CCSD
Transconductance
FBSD Input Leakage Current FBSD = 1.25V -100 +100 nA
LXSD Leakage Current V
Switch On-Resistance
P-Channel Current Limit 0.65 0.95 A
SDOK Output Low Voltage 0.1mA into SDOK 0.1 V
SDOK Leakage Current ONSU = GND 1 µA
AUX1, 2, 3 DC-DC CONTROLLERS
Maximum Duty Cycle FB_ = 1V 80 90 %
FB1 and FB3 Regulation Voltage FB_ = CC_ 1.225 1.275 V
FB2 (MAX1584) Regulation
Voltage
FB2 (MAX1585) (Inverter)
Regulation Voltage
FB_ to CC_ Transconductance FB_ = CC_ 80 185 µS
FB_ Input Leakage Current FB_ = 1.25V -100 +100 nA
DL_ Driver Resistance Output high or low 10 Ω
AUX1OK Output Low Voltage 0.1mA into AUX1OK 0.1 V
AUX1OK Leakage Current ONSU = GND 1 µA
OVERLOAD AND THERMAL PROTECTION
SCF Leakage Current ONSU = PVSU, FBSU = 1.5V 1 µA
SCF Output Low Voltage 0.1mA into SCF 0.1 V
LOGIC INPUTS
ON_ Input Low Level
ON_ Input High Level
FBSD = CCSD 80 185 µS
= 0 to 3.6V, PVSU = 3.6V 5 µA
LXSD
N channel 150
P channel 250
FB_ = CC_ 1.225 1.275 V
FB_ = CC_ -0.01 +0.01 V
1.1V < PVSU < 1.8V (ONSU only) 0.2
1.8V < PVSU < 5.5V 0.4
1.1V < PVSU < 1.8V (ONSU only) V
1.8V < PVSU < 5.5V 1.6
PVSU
- 0.2
mΩ
V
V
MAX1584/MAX1585
5-Channel Slim DSC Power Supplies
_______________________________________________________________________________________ 7
Typical Operating Characteristics
(Circuit of Figure 1, TA= +25°C, unless otherwise noted.)
Note 5: The step-up current limit in startup refers to the LXSU switch current limit, not an output current limit.
Note 6: The idle mode current threshold is the transition point between fixed-frequency PWM operation and idle mode operation
(where switching rate varies with load). The specification is given in terms of inductor current. In terms of output current, the
idle mode transition varies with input-output voltage ratio and inductor value. For the step-up, the transition output current is
approximately 1/3 the inductor current when stepping from 2V to 3.3V. For the step-down, the transition current in terms of
output current is approximately 3/4 the inductor current when stepping down from 3.3V to 1.8V.
Note 7: Operation in dropout (100% duty cycle) can only be maintained for 100,000 OSC cycles before the output is considered
faulted, triggering global shutdown.
Note 8: Specifications to -40°C are guaranteed by design, not production tested.
ELECTRICAL CHARACTERISTICS (continued)
(V
PVSU
= VPV= V
PVSD
= V
INDL2
= 3.6V, TA= -40°C to +85°C, unless otherwise noted.) (Note 8)
STEP-UP EFFICIENCY
vs. LOAD CURRENT
100
90
80
70
60
50
40
EFFICIENCY (%)
30
20
10
VIN = 4.5V
= 4.2V
V
IN
= 3.8V
V
IN
= 3.0V
V
IN
V
= 5V
0
11000
LOAD CURRENT (mA)
OUT
10010
MAX1584/85 toc01
100
90
80
70
60
50
40
EFFICIENCY (%)
30
20
10
0
STEP-DOWN EFFICIENCY
vs. LOAD CURRENT
100
90
80
MAX1584/85 toc02
VIN = 3.0V
= 3.8V
V
IN
= 4.2V
V
IN
= 4.5V
V
IN
PVSD CONNECTED TO BATTERY
= 1.5V
V
OUT
DOES NOT INCLUDE CURRENT USED
BY THE STEP-UP TO POWER THE IC
11000
LOAD CURRENT (mA)
10010
70
60
50
EFFICIENCY (%)
40
30
20
10
COMBINED BOOST-BUCK
EFFICIENCY vs. LOAD CURRENT
VIN = 4.5V
V
IN
V
IN
V
IN
1 1000
LOAD CURRENT (mA)
= 4.2V
= 3.8V
= 3.0V
10010
V
V
OUT3
OUTSU
= 3.3V
= 5.0V
MAX1584/85 toc03
EFFICIENCY vs. INPUT VOLTAGE
100
95
90
85
EFFICIENCY (%)
80
SU = 5V, 300mA
SD = 1.5V, 250mA
SU + AUX3 = 3.3V, 300mA
75
AUX1 = 15V, 40mA
AUX2 = -7.5V, 40mA
70
3.0 4.5
INPUT VOLTAGE (V)
4.03.5
MAX1584/85 toc04
AUX1 EFFICIENCY vs. LOAD CURRENT
MAX1585 AUX2 EFFICIENCY
100
90
80
70
60
EFFICIENCY (%)
50
40
30
11000
VIN = 4.5V
= 4.2V
V
IN
= 3.8V
V
IN
= 3.0V
V
IN
10010
LOAD CURRENT (mA)
V
= 15V
OUT1
MAX5184/85 toc05
90
80
70
60
EFFICIENCY (%)
50
40
30
1 1000
vs. LOAD CURRENT
VIN = 3.0V
= 3.8V
V
IN
= 4.2V
V
IN
= 4.5V
V
IN
10010
LOAD CURRENT (mA)
V
OUT2
MAX5184/85 toc06
= -7.5V
MAX1584/MAX1585
5-Channel Slim DSC Power Supplies
8 _______________________________________________________________________________________
Typical Operating Characteristics (continued)
(Circuit of Figure 1, TA= +25°C, unless otherwise noted.)
NO-LOAD INPUT CURRENT
vs. INPUT VOLTAGE (SWITCHING)
9
8
7
6
5
4
3
INPUT CURRENT (mA)
2
VSU = 5.0V
1
0
05.0
BOOST-BUCK (SU + AUX3)
= 5.0V, OUT3 = 3.33V
V
SU
INPUT VOLTAGE (V)
REFERENCE VOLTAGE
vs. TEMPERATURE
1.254
MAX1584/85 toc07
MINIMUM STARTUP VOLTAGE (V)
4.54.03.0 3.51.0 1.5 2.0 2.50.5
1.250
MINIMUM STARTUP VOLTAGE
vs. LOAD CURRENT (V
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
0 1000
vs. REFERENCE LOAD CURRENT
SCHOTTKY DIODE CONNECTED
FROM IN TO V
LOAD CURRENT (mA)
SU
800600400200
REFERENCE VOLTAGE
)
SU
MAX5184/85 toc08
1.251
1.248
REFERENCE VOLTAGE (V)
1.246
1.243
-50 100
TEMPERATURE (°C)
OSCILLATOR FREQUENCY vs. R
1100
900
700
500
300
OSCILLATOR FREQUENCY (kHz)
100
-100
11000
C
= 470pF
OSC
C
= 330pF
OSC
C
= 220pF
OSC
C
OSC
C
OSC
10010
R
(kΩ)
OSC
MAX1584/85 toc09
7550250-25
OSC
MAX1584/85 toc11
= 100pF
= 47pF
1.249
1.248
1.247
1.246
REFERENCE VOLTAGE (V)
1.245
1.244
0300
REFERENCE LOAD CURRENT (µA)
MAX1584/85 toc10
25020015010050
SWITCHING FREQUENCY
vs. TEMPERATURE
510
509
508
507
506
505
504
SWITCHING FREQUENCY (kHz)
503
502
501
-50 100
TEMPERATURE (°C)
R
OSC
C
OSC
= 51kΩ
= 100pF
7550250-25
MAX1584/85 toc12
MAX1584/MAX1585
5-Channel Slim DSC Power Supplies
_______________________________________________________________________________________ 9
Typical Operating Characteristics (continued)
(Circuit of Figure 1, TA= +25°C, unless otherwise noted.)
MAXIMUM DUTY CYCLE (%)
AUX MAXIMUM DUTY CYCLE
vs. FREQUENCY
88
WHEN THIS DUTY CYCLE IS EXCEEDED
FOR 100,000 CLOCK CYCLES,
87
THE MAX1584/MAX1585 SHUT DOWN
86
85
84
83
82
81
80
0 1000
FREQUENCY (kHz)
STEP-DOWN STARTUP RESPONSE
0V
0V
0A
4ms/div
C
OSC
MAX1584/85 toc15
VIN = 3.5V
= 330pF
900800100 200 300 500 600400 700
MAX1584/85 toc13
ONSD
5V/div
OUTSD
5V/div
I
OUTSD
200mA/div
STEP-UP STARTUP RESPONSE
0V
0V
0A
0A
AUX1 STARTUP RESPONSE
0V
0V
0A
200µs/div
2ms/div
MAX1584/85 toc14
VIN = 3.5V
MAX1584/85 toc16
VIN = 3.5V
ONSU
5V/div
OUTSU
5V/div
I
OUTSU
200mA/div
I
IN
1.0A/div
ON1
5V/div
OUT1
10V/div
I
OUT1
100mA/div
STEP-DOWN LOAD-
STEP-UP LOAD-TRANSIENT RESPONSE
0V
0A
V
= 5.0V
OUTSU
= 3.5V
V
IN
400µs/div
MAX1584/85 toc17
V
OUTSU
AC-COUPLED
500mV/div
I
OUT_SU
200mA/div
0V
0A
TRANSIENT RESPONSE
VIN = 3.5V
= 1.5V
V
OUT_SD
400µs/div
MAX1584/85 toc18
V
OUTSD
AC-COUPLED
100mV/div
I
OUT_SD
100mA/div
Loading...