MAX1584 Datasheet, PDF (2/29 Pages) Maxim Integrated Products – 5-Channel Slim DSC Power Supplies

5-Channel Slim DSC Power Supplies
ABSOLUTE MAXIMUM RATINGS
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
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.
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
(V_PVSU = V_PV = V_PVSD = V_INDL2 = 3.6V, T_A = 0°C to +85°C, unless otherwise noted.)
PARAMETER
GENERAL
Input Voltage Range
Step-Up Minimum Startup
Voltage
Shutdown Supply Current into PV
Supply Current into PV with
Step-Up Enabled
CONDITIONS
(Note 2)
I_LOAD < 1mA, T_A = +25°C, startup voltage tempco is
-2300ppm/°C (typ) (Note 3)
PV = 3.6V
ONSU = 3.6V, FBSU = 1.5V
(does not include switching losses)
Supply Current into PV with
ONSU = ONSD = 3.6V, FBSU = 1.5V, FBSD = 1.5V
Step-Up and Step-Down Enabled (does not include switching losses)
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)
REFERENCE
Reference Output Voltage
Reference Load Regulation
Reference Line Regulation
OSCILLATOR
OSC Discharge Trip Level
OSC Discharge Resistance
OSC Discharge Pulse Width
OSC Frequency
STEP-UP DC-DC CONVERTER
Step-Up Startup-to-Normal
Operating Threshold
I_REF = 20µA
10µA < I_REF < 200µA
2.7 < PVSU < 5.5V
Rising edge
OSC = 1.5V, I_OSC = 3mA
R_OSC = 47kΩ, C_OSC =100pF
Rising edge or falling edge (Note 4)
Step-Up Startup-to-Normal
Operating Threshold Hysteresis
MIN TYP MAX UNITS
0.7
5.5
V
0.9
1.1
V
0.1
5
µA
300
450
µA
450
700
µA
400
650
µA
1.23 1.25 1.27
V
4.5
10
mV
1.3
5
mV
1.225 1.25 1.275
V
52
80
Ω
150
ns
500
kHz
2.30
2.5
2.65
V
80
mV
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