Datasheet

ELECTRICAL CHARACTERISTICS
UC2625-EP
SLUS802 – MARCH 2008 .................................................................................................................................................................................................. www.ti.com
Unless otherwise stated, these specifications apply for: T
A
= 25 ° C; Pwr V
CC
= V
CC
= 12 V; R
OSC
= 20 k Ω to V
REF
; C
OSC
= 2 nF;
R
TACH
= 33 k Ω ; C
TACH
= 10 nF; and all outputs unloaded. T
A
= T
J
.
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
Overall
Supply current 14.5 30.0 mA
VCC turn-on threshold -55 ° C to 125 ° C 8.65 8.95 9.55
V
VCC turn-off threshold 7.75 8.05 8.55
Overvoltage/Coast
OV-COAST inhibit threshold 1.65 1.75 1.85
OV-COAST restart threshold 1.535 1.65 1.75 V
-55 ° C to 125 ° C
OV-COAST hysteresis 0.05 0.10 0.155
OV-COAST input current – 10 – 1 10 µ A
Logic Inputs
H1, H2, H3 low threshold 0.8 1.0 1.25
-55 ° C to 125 ° C V
H1, H2, H3 high threshold 1.6 1.9 2.0
H1, H2, H3 input current -55 ° C to 125 ° C, to 0 V – 400 – 250 – 120 µ A
QUAD SEL, dir thresholds -55 ° C to 125 ° C 0.8 1.4 3.0 V
QUAD SEL hysteresis 70 mV
DIR hysteresis 0.6 V
QUAD SEL input current – 30 50 150
µ A
DIR input current – 30 – 1 30
PWM Amp/Comparator
E/A IN(+), E/A IN( – ) input current To 2.5 V – 5.0 – 0.1 5.0
µ A
PWM IN input current To 2.5 V 0 3 30
Error amp input offset 0 V < V
COMMON-MODE
< 3 V – 10 10 mV
Error amp voltage gain 70 90 dB
E/A OUT range 0.25 3.50
V
-55 ° C to 125 ° C 0.25 4.55
Pullup current To 0 V -16 – 10 – 5
µ A
To 0 V , -55 ° C to 125 ° C – 17.5 -5
S
START
Discharge current To 2.5 V 0.1 0.4 3.0 mA
Restart threshold 0.1 0.2 0.3 V
Current Amp
Gain I
SENSE1
= 0.3 V, I
SENSE2
= 0.5 V to 0.7 V 1.75 1.95 2.15 V/V
Level shift I
SENSE1
= 0.3 V, I
SENSE2
= 0.3 V 2.4 2.5 2.65
Peak current threshold 0.14 0.20 0.26 V
I
SENSE1
= 0 V, force I
SENSE2
Over current threshold 0.26 0.30 0.36
I
SENSE1
, I
SENSE2
input current – 850 – 320 0
To 0 V µ A
I
SENSE1
, I
SENSE2
offset current ± 2 ± 12
Range I
SENSE1
, I
SENSE2
– 1 2 V
Tachometer/Brake
TACH-OUT high level 4.7 5 5.3
-55 ° C to 125 ° C, 10 k Ω to 2.5 V V
TACH-OUT low level 0.2
On time 170 220 280 µ s
On time change with temp -55 ° C to 125 ° C 0.1%
RC-BRAKE input current To 0 V – 4.0 – 1.9 mA
Threshold to brake, RC-brake -55 ° C to 125 ° C 0.8 1.0 1.2
V
Brake hysteresis, RC-brake 0.09
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