MAX622CSA ,High-Side Power SuppliesELECTRICAL CHARACTERISTICS (MAX622)
(Vcc = +5V, TA = TMIN to TMAX, unless otherwise noted.)
P ..
MAX622ESA ,High-Side Power SuppliesFeatures
. +3.5V to +16.5V Operating Supply Voltage Range
. Output Voltage Regulated to Vcc + 11V ..
MAX622ESA ,High-Side Power SuppliesGeneral Description
The MAX622/MAX623 high-side power supplies, using a
regulated charge-pump, ..
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MAX622CPA-MAX622CSA-MAX622ESA
High-Side Power Supplies
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Migh-Side Power Supplliies
General Description
The MAX622/MAX623 high-side power supplies, using a
regulated charge-pump, generate a regulated output volt-
age 11V greater than the input supply voltage to power
high-side switching and control circuits. The
MAX622/MAX623 allow low-resistance N-Channel
MOSFETs (FETs) to be used in circuits that normally require
costly, less efficient P-Channel FETs and PNP transistors.
The high-side outputalso eliminates the need for logic FETs
in +5V and other low-voltage switching circuits.
A +3.5V to +16.5V input supply range and a typical
quiescent current of only 70PA make the
MAX622/MAX623 ideal for a wide range of line- and
battery-powered switching and control applications
where efficiency is crucial. Also provided is a logic-level
Power-Ready Output (PR) to indicate when the high-side
voltage reaches the proper level.
The MAX622 comes in 8-pin DIP and SO packages and
requires three inexpensive external capacitors. The
MAX623 is supplied in 16-pin DlPs only, but contains
internal capacitors and requires no external components.
Applications
High-Side Power Control with N-Channel FETs
Low-Dropout Voltage Regulators
Power Switching from Low Supply Voltages
H-Switches
Stepper Motor Drivers
Battery-Load Management
Portable Computers
Typical Operating Circuit
+35V T0 rl6dN
0.1 F n,
CER/FMICI 8 l
f 1 Vcc ' 03
T (ll, q 5 +12,5vt0+27.5v
6 MAX622
JT fl,
L2 cr m L.
NOTE: MAX623 CONTAINS Cl, C2. Go C3 ON BOARD.
Features
. +3.5V to +16.5V Operating Supply Voltage Range
. Output Voltage Regulated to Vcc +11V(Typ)
9 70PA Typ Quiescent Current
. Power-Ready Output
Ordering Information
PART TEMP. RANGE PIN-PACKAGE
MAX622CPA 0°C to +70°C 8 Plastic DIP
MAX622CSA 0°C to +70°C 8 SO
MAX622C/D 0'C to +70'C Dice'
MAX622EPA MO'C to +85'C 8 Plastic DIP
MAX622ESA -40'C to +85°C 8 SC)
MAX623CPE 0°C to +70°C 16 Plastic DIP
MAX623EPE -40''C to +85°C 16 Plastic DIP
"Contact factory for dice specifications.
Pin Configurations
Cl) E E Vcc
cg, E MAXIM E m
MAX622
PR E El C2+
(N) E E Vout
DlP/SO
t E q E} LC
IC, E E LC
l.0 E MAXIM E] Vcc
'-C E MAX623 E] lo.
m [E 2] LC.
PR IE E |.C
GND II E Vout
GND E El VOUI
IVI A X I lVl
Maxim Integrated Products 1
Call toll free 1-800-998-8800 for free samples or literature.
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Miiglb4ridle Power Suppllies
ABSOLUTE MAXIMUM RATINGS
Vcc ................................................... +17V Operating Temperature Ranges:
Vour .......................................... +30V MAX62 - C - _ ......................... 0''C to +70'C
IOUT .......................................... 25mA MAX62 _ E _ - .............tFrr.tt.tt.t MO''C to +85°C
Continuous Total Power Dissipation (TA = o70''C) Storage Tem perature Range .............. -65"C to +160°C
8-pin Plastic DIP (derate 6.9mW/°C above +70''C) . . . 552mW Lead Temperature (soldering, 10 sec) .............. +300°C
8-pin SO (derate 5.88mW/" C above +70''C) ........ 471mW
16-pin Plastic DIP (derate 7.41mW/'C above +70°C) . 593mW
Stresses be and those listed under 'Absolute Maximum Ratings' may cause permanent damage to the device. These are stress ratings only, and functional
operation C) 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 (MAX622)
(Vcc = +5V, TA = TMIN to TMAX, unless otherwise noted.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Supply Voltage Vcc 3.5 16.5 V
'OUT = O, Vcc = 3.5V,
C1---C2--0.047wF,C3 =1pF 11.5 12.5 16.5
)OUT = O, Vcc = 4,5V,
Cl = C2 = 0.047uF. C3 = 1p.F 14.5 15.5 17.5
IOUT = O, Vcc = 16.5V,
C1 = C2 = 0.01pF, C3 = 1uF 26.5 27.5 29.5
Hi h Side Volta e (Note 1) Vo T (Note 2) V
g g IOUT = 50PA, VCC = 3.5V, 8 5 10 5 16 5
C1=C2=0.047pF,C3=1wF . . .
(OUT = 250pA. VCC = 5V,
C1--C2--0,047wF,C3--1gF 15 18
IOUT = 500pA, Vcc = 16.5V,
C1 = C2 = 0.01uF, C3 = IPF 26.5 29.5
(Note 2)
Power-Ready Threshold PRT IOUT = 0 (Note 3) 12 13.5 14.5 V
Power-Ready Output High PRoH ISOURCE = 100pA 3.8 4.3 5 V
Power-Ready Output Low PRoL ISINK = 1mA 0.4 V
. C1 --C2--0O1wF,C3--10pF,
Output Voltage Ripple VR I OUT = 1m A, Vcc = 16.5V 50 mV
Switching Frequency Fo 90 kHz
IOUT = o, Vcc = SV,
C1 = C2 = 0.047WF, C3 = IPF, 70 500
Q ' 18 I C ent IQ TA = +25'C pA
unescen u urr
pp y IOUT = 0, Vcc = 16.5V,
C1 = C2 = 0.047uF. C3 = 1pF, 70 350
TA = +25''C
IVI " X t IV!
