Datasheet

TC1044S-12 9/16/96
TC1044S
Charge Pump DC-TO-DC Voltage Converter
2
© 2001 Microchip Technology Inc. DS21348A
Package Power Dissipation (T
A
≤ 70°C) (Note 2)
8-Pin CerDIP ..................................................800mW
8-Pin Plastic DIP.............................................730mW
8-Pin SOIC .....................................................470mW
Operating Temperature Range
C Suffix ..................................................0°C to +70°C
I Suffix............................................... – 25°C to +85°C
E Suffix ............................................. – 40°C to +85°C
M Suffix...........................................– 55°C to +125°C
Storage Temperature Range ................– 65°C to +150°C
ELECTRICAL CHARACTERISTICS: T
A
= +25°C, V
+
= 5V, C
OSC
= 0, Test Circuit (Figure 1), unless otherwise
indicated.
Symbol Parameter Test Conditions Min Typ Max Unit
I
+
Supply Current R
L
= ∞ — 80 160 µA
0°C < T
A
< +70°C — — 180
– 40°C < T
A
< +85°C — — 180
– 55°C < T
A
< +125°C — — 200
I
+
Supply Current 0°C < T
A
< +70°C — — 300 µA
(Boost Pin = V
+
)– 40°C < T
A
< +85°C — — 350
– 55°C < T
A
< +125°C — — 400
V
+
H2
Supply Voltage Range, High Min ≤ T
A
≤ Max, 3 — 12 V
R
L
= 10 kΩ, LV Open
V
+
L2
Supply Voltage Range, Low Min ≤ T
A
≤ Max, 1.5 — 3.5 V
R
L
= 10 kΩ, LV to GND
R
OUT
Output Source Resistance I
OUT
= 20mA — 60 100 Ω
I
OUT
= 20mA, 0°C ≤ T
A
≤ +70°C — 70 120
I
OUT
= 20mA, –40°C ≤ T
A
≤ +85°C — 70 120
I
OUT
= 20mA, –55°C ≤ T
A
≤ +125°C — 105 150
V
+
= 2V, I
OUT
= 3 mA, LV to GND
0°C ≤ T
A
≤ +70°C — — 250 Ω
– 55°C ≤ T
A
≤ +125°C — — 400
F
OSC
Oscillator Frequency Pin 7 open; Pin 1 open or GND — 10 — kHz
Boost Pin = V
+
—45—
P
EFF
Power Efficiency R
L
= 5 kΩ; Boost Pin Open 96 98 — %
T
MIN
< T
A
< T
MAX
; Boost Pin Open 95 97 —
Boost Pin = V
+
—88—
V
OUT
E
FF
Voltage Conversion Efficiency R
L
= ∞ 99 99.9 — %
Z
OSC
Oscillator Impedance V
+
= 2V — 1 — MΩ
V
+
= 5V — 100 — kΩ
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 TC1044S.
2. Derate linearly above 50°C by 5.5mW/°C.
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 (Note 1) ...................... 20µA for V
+
> 3.5V
Output Short Duration (V
SUPPLY
≤ 5.5V) ......... Continuous
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 permanent 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.