Rainbow Electronics MAX769 - Manual (Page 2)

MAX769
2 or 3-Cell, Step-Up/Down,
Two-Way Pager System IC
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(OUT = 3.0V, BATT = 3.6V, T A = -40°C to +85°C, unless otherwise noted. Typical values are at T A = +25°C.) (Note 1)
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.
BATT, OUT, NICD, LBO, RSO to AGND...................-0.3V to +6V
REG1, REG2, OFS, REF, R2IN to AGND .....-0.3V to (OUT + 0.3V)
SCL, SDO, SDI,
CS, SYNC, FILT, DR2IN,
CH0, LBI, RSIN to AGND......................-0.3V to (REG1 + 0.3V)
REG3 .......................................................-0.3V to (REG2 + 0.3V)
DR1, DR2 to DRGND ...............................-0.3V to (BATT + 0.3V)
PGND, DRGND to AGND ......................................-0.3V to +0.3V
LX1 to PGND .............................................-0.3V to (OUT + 0.3V)
LX2 to PGND ............................................-0.3V to (BATT + 0.3V)
Continuous Power Dissipation (T
A = +70°C)
QSOP (derate 8mW/°C above +70°C) ..........................640mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +165°C
Lead Temperature (soldering, 10sec) .............................+300°C
I REF = 0 to 20µA, OUT = 1.8V to 4.9V V -1.5% 1.28 1.5%
T A = +25°C
Reference Voltage
I DR = 120mA
Run or Coast Mode
Ω
1.8 2.8
DR1, DR2 On-Resistance
V DR = 5V nA 1 250 DR1, DR2 Leakage Current
Charger and Backup Modes off, NICD = 3.6V µA
Incremental supply current when on
REG2, REG3 and CH DAC off, V OUT = 2.8V
REG2, REG3 and CH DAC on
Coast Mode
1.2 3
Incremental supply current when on
T A = +25°C
CONDITIONS
T A = -40°C to +85°C
I SDO = 100µA mV 200 SDO Output Low
I SDO = -100µA, from REG1 V
V REG1
- 0.2
SDO Output High
Includes CS, SDI, SCL, DR2IN, and SYNC V 0.4 Logic Input Level Low
Includes CS, SDI, SCL, DR2IN, and SYNC V
V REG1
- 0.4
Logic Input Level High
3.6
Charger and Backup Modes off, BATT = 0V,
OUT = 0V
µA 1.2 3
NICD Input Current, Power Fail
(Note 8)
Logic Input = 0 to 3.3V; includes CS, SDI, SCL,
DR2IN, and SYNC
µA
V 1.6 2.0
-1 1
BATT Minimum Start-Up Voltage
(Note 3)
V 1.5 5.5
Logic Input Current
NICD Input Current, Standby
(Note 6)
BATT Typical Operating Range
(Note 2)
Incremental supply current when on µA
Backup Mode, NICD = 3.6V, OUT = 3V
50 REG2 Supply Current (Note 4)
µA 20 40
NICD Input Supply Current, Backup
(Note 7)
µA 30 CH DAC Supply Current (Note 4)
µA 13 25 Coast Mode Supply Current (Note 4)
µA 875 1350 Run Mode Supply Current (Note 4)
µA 4 10 BATT Supply Current (Note 5)
µA 20 REG3 Supply Current (Note 4)
UNITS MIN TYP MAX PARAMETER
GENERAL PERFORMANCE