Datasheet

 2001-2013 Microchip Technology Inc. DS20001467B-page 3
TC7660S
1.0 ELECTRICAL
CHARACTERISTICS
Absolute Maximum Ratings*
Supply Voltage ................................................................+13V
LV, Boost, and OSC Inputs Voltage: (Note 1)
...................................-0.3V to (V
+
+ 0.3V) for V
+
< 5.5V
......................... (V
+
– 5.5V) to (V
+
+ 0.3V) for V
+
> 5.5V
Current into LV ......................................... 20 µA for V
+
> 3.5V
Output Short Duration (V
SUPPLY
 5.5V)............... Continuous
Package Power Dissipation: (T
A
 70°C) (Note 2
8-Pin PDIP ..........................................................730 mW
8-Pin SOIC..........................................................470 mW
Operating Temperature Range:
C Suffix ...................................................... 0°C to +70°C
E Suffix ................................................... -40°C to +85°C
Storage Temperature Range ........................ -65°C to +150°C
Lead Temperature (Soldering, 10s) ...... ....................... 150°C
* Notice: Stresses above those listed under “Maximum
Ratings” may cause permanent damage to the device. This is
a stress rating only and functional operation of the device at
those or any other conditions above those indicated in the
operational sections of this specification is not intended.
Exposure to maximum rating conditions for extended periods
may affect device reliability.
ELECTRICAL SPECIFICATIONS
Electrical Characteristics: Unless otherwise noted, specifications measured over operating temperature range with V
+
= 5V,
C
OSC
= 0, refer to test circuit in Figure 4-1.
Parameters Sym Min Typ Max Units Conditions
Supply Current
(Boost pin OPEN or GND)
I
+
— 80 160 µA R
L
= 
— — 180 0°C  T
A
 +70°C
— — 180 -40°C  T
A
 +85°C
— — 200 -55°C  T
A
 +125°C
Supply Current
(Boost pin = V
+
)
I
+
— — 300 µA 0°C  T
A
 +70°C
— — 350 -40°C  T
A
 +85°C
— — 400 -55°C  T
A
 +125°C
Supply Voltage Range, High V
+
H
3.0 — 12 V Min T
A
Max, R
L
= 10 k, LV Open
Supply Voltage Range, Low V
+
L
1.5 — 3.5 V Min T
A
Max, R
L
= 10 k, LV to GND
Output Source Resistance
R
OUT
— 60 100  I
OUT
=20 mA
— 70 120 I
OUT
=20 mA, 0°C  T
A
 +70°C
— 70 120 I
OUT
=20 mA, -40°C  T
A
 +85°C
— 105 150 I
OUT
=20 mA, -55°C  T
A
 +125°C
— — 250 V
+
= 2V, I
OUT
= 3 mA, LV to GND
0°C  T
A
 +70°C
— — 400 V
+
= 2V, I
OUT
= 3 mA, LV to GND
-55°C  T
A
 +125°C
Oscillator Frequency
f
OSC
— 10 — kHz Pin 7 open, Pin 1 open or GND
45 Boost Pin = V
+
Power Efficiency
P
EFF
96 98 — % R
L
= 5 kBoost Pin Open
95 98 — T
MIN
 T
A
 T
MAX
; Boost Pin Open
— 88 — Boost Pin = V
+
Voltage Conversion Efficiency
V
OUTEFF
99 99.9 — % R
L
= 
Oscillator Impedance
Z
OSC
—1—M V
+
= 2V
— 100 — k V
+
= 5V
Note 1: Connecting any input terminal to voltages greater than V
+
or less than GND may cause destructive latch-up. It is recom-
mended that no inputs from sources operating from external supplies be applied prior to "power up" of the TC7660S.
2: Derate linearly above 50°C by 5.5mW/°C.