Datasheet

2
TC7660H
HIGH FREQUENCY 7660 DC-TO-DC
VOLTAGE CONVERTER
TC7660H-2 10/1/96
© 2001 Microchip Technology Inc. DS21466A
ABSOLUTE MAXIMUM RATINGS*
Supply Voltage ...................................................... +10.5V
LV 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 (Note 1) ..................... 20µA for V
+
> 3.5V
Output Short Duration (V
SUPPLY
≤ 5.5V) ......... Continuous
Power Dissipation (T
A
≤ 70°C) (Note 2)
SOIC ...............................................................470mW
Plastic DIP ......................................................730mW
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, 10 sec) ................. +300°C
*Static-sensitive device. Unused devices must be stored in conductive
material. Protect devices from static discharge and static fields. Stresses
above those listed under "Absolute Maximum Ratings" may cause perma-
nent damage to the device. These are stress ratings only and functional
operation of the device at these or any other conditions above those
indicated in the operation sections of the specifications is not implied.
Exposure to absolute maximum rating conditions for extended periods may
affect device reliability.
ELECTRICAL CHARACTERISTICS: Over Operating Temperature Range with V
+
= 5V, C
I
= C
2
= 1µF, C
OSC
= 0,
Test Circuit (Figure 1), unless otherwise indicated.
Symbol Parameter Test Conditions Min Typ Max Unit
I
+
Supply Current R
L
= ∞ — 0.46 1.0 mA
V
+
H
Supply Voltage Range, High Min ≤ T
A
≤ Max, 3 — 10 V
R
L
= 5kΩ, LV Open
V
+
L
Supply Voltage Range, Low Min ≤ T
A
≤ Max, 1.5 — 3.5 V
R
L
= 5kΩ, LV to GND
R
OUT
Output Source Resistance I
OUT
= 20mA, T
A
= 25°C — 55 80 Ω
I
OUT
= 20mA, 0°C ≤ T
A
≤ +70°C——95Ω
(C Device)
I
OUT
= 20mA, – 40°C ≤ T
A
≤ +85°C — — 110 Ω
(E Device)
V
+
= 2V, I
OUT
= 3mA, LV to GND — 150 250 Ω
0°C ≤ T
A
≤ +70°C
F
OSC
Oscillator Frequency — 120 — kHz
P
EFF
Power Efficiency I
OUT
= 10mA, Min ≤ T
A
≤ Max 81 85 — %
V
EFF
Voltage Efficiency R
L
= ∞ 99 99.7 — %
NOTES: 1. Connecting any input terminal to voltages greater than V+ or less than GND may cause destructive latch-up. It is recommended that no
inputs from sources operating from external supplies be applied prior to "power up" of the TC7660H.
2. Derate linearly above 50°C by 5.5mW/°C.